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Japan’s Mystery Kangaroos

Posted by: Loren Coleman on January 5th, 2010

Let’s jump into the new year with a guest column about…

Mystery Kangaroos in Japan
by Brent Swancer

Japan has its fair share of natural beauty and unique fauna, but one thing that no one expects to find here is kangaroos in the wild. Yet this is exactly what bewildered residents have reported seeing in a rural community in Miyagi prefecture, which is located in northeastern Honshu, Japan.

The last months of 2009 in particular saw a spate of mysterious kangaroo sightings in the area around Ōsaki city, Miyagi prefecture, that have had authorities scratching their heads. Most of the sightings have occurred in and around the wilds of the rural Mayama district, which is known for its open fields, grassland, and pastures.

The first report of the year occurred on October 24, 2009, when a resident of the Mayama district spotted a kangaroo in the woods. The animal was described by the eyewitness as being around 1 meter (3.3 feet) in height, with beige colored fur and shining eyes. Several other separate reports of kangaroos began to come in over the following months. The most recent sighting occurred towards the end of December, when an elderly woman spotted a kangaroo bounding across an open field.


Miyagi Prefecture

As amazing as these sightings are, the locale is not exactly new to kangaroos roaming its countryside, and in some ways the recent sightings could be seen as a recurrence of an ongoing phenomenon in the area. According to Etsuro Ishikawa, the head of Mayama’s community center, there have been at least 20 reports of kangaroo sightings in the area over the past seven years. This suggests that the animal is a rather long term resident, and has managed to survive on its own in this habitat. It is not clear whether these sightings have been of the same kangaroo, or if is a solitary animal or several.

Now obviously, kangaroos are not native to Japan. So how did one get there? What is going on here?

There have been no reports of missing kangaroos from zoos around the area, and the animals would find it a tough swim from Australia to Japan. This leaves us with the possibility of escapees or released pets. The probability of this is actually very high since currently the sale and rearing of kangaroos and wallabies aren’t subject to any regulations under Japanese law. In fact, these animals can regularly be seen openly for sale at pet shops throughout the country. Considering this, It certainly seems possible for an escaped or released exotic pet to be behind the reports.

Wherever it came from, there has been some speculation as to what species of kangaroo it could be as well as the odds that one could even survive for any appreciable length of time in Japan’s temperate climate.



Eastern Grey Kangaroo

Motoyasu Ida, a zoo official at the Ueno Zoo in Tokyo, Japan, thinks that the culprit could be an Eastern Grey Kangaroo (Macropus giganteus). Eastern Greys are relatives of the red kangaroo, and are found in Australia in the eastern half of Queensland, most of New South Wales and Victoria, and in parts of South Australia. They are a large species, with heights of up to 1.8 meters (6 feet), and weights of up to 60 kg (135lbs). This size fits in well with eyewitnesses estimates of the animal or animals as being anywhere from 1 meter (3.3 feet) to 1.8 meters (6 feet) tall, indicating that the kangaroo would be of a fairly large species. Eastern Greys also match the light grey to brown or beige coloration described in eyewitness reports of the mystery kangaroos.

Ida also thinks that an Eastern Grey would make a good candidate due to the species’ sturdiness and adaptability, a must for surviving long term through the area’s cold winters. He said, “If the body (of the mystery kangaroo) is as big as an Eastern Grey kangaroo, it would be able to maintain its body temperature, even when it’s cold.” Ida also remarked that even in the dead of winter, the Eastern Greys at Ueno zoo are remarkably active and like to spend a lot of time out of their enclosures in the cold.

Indeed, Eastern Greys are incredibly adaptable, which is a large part of the reason why they are one of the most ubiquitous and commonly seen species of kangaroo in their native range. If there is enough food, it seems at least plausible that a kangaroo of this type, or even a group of them could feasibly survive in this habitat.

Japanese zoologist, Hideo Obara, also seems to concur that some kangaroos can be very good survivors. Obara explained, “It wouldn’t be that unusual for a kangaroo to be living in Miyagi prefecture. Kangaroos are good at adapting to different environments and some species live in areas where the temperature gets below freezing.”

American cryptozoologist Loren Coleman doesn’t agree that a kangaroo is necessarily the culprit, and offered his own ideas on what could be behind the sightings. Coleman said, “Purely based on size alone, I have to disagree with the Japanese expert’s opinion. If this is a typical ‘out of place ‘roo report,’ the species described will not turn out to be a kangaroo, but a wallaby. As I note in my chapter on ‘mystery kangaroos’ or ‘phantom kangaroos’ in Mysterious America, there are wallabies adapted to colder climates that do well in northern locations. They are the ones that are most often, incorrectly, reported as kangaroos.”

There have been no photos or video footage taken of the phantom “kangaroos” at this point, so speculation is likely to remain for now on whether kangaroos or wallabies are behind the Japanese eyewitness accounts.

Despite the bizarre nature of this case, experts and authorities are taking the recent sightings seriously. In an effort to quell some residents’ fears, Obara has said that he doesn’t believe kangaroos on the loose in the area would pose any threat to the environment or to humans. Even so, residents have been warned that anyone seeing one of the kangaroos is not to approach the animal and to contact the proper authorities immediately.


The Kangaroo label sake locals are making in response to the recent sightings.

Whether these kangaroos or wallabies are dangerous or not, one enterprising local brand of Japanese liquor has decided to capitalize on all the publicity generated by the recent sightings. They have relabeled one of their lines of sake (Japanese rice wine) to feature a kangaroo prominently on front. The manufacturers hope to donate some of the proceeds towards the establishment of a kangaroo sanctuary in the area.

It looks like 2009 was a leap year for at least one rural community in Japan.


Will signs like this, not yet seen in Japan, be something to be placed there in the near future?

About Loren Coleman
Loren Coleman is one of the world’s leading cryptozoologists, some say “the” leading. Certainly, he is acknowledged as the current living American researcher and writer who has most popularized cryptozoology in the late 20th and early 21st centuries. Starting his fieldwork and investigations in 1960, after traveling and trekking extensively in pursuit of cryptozoological mysteries, Coleman began writing to share his experiences in 1969. An honorary member of Ivan T. Sanderson’s Society for the Investigation of the Unexplained in the 1970s, Coleman has been bestowed with similar honorary memberships of the North Idaho College Cryptozoology Club in 1983, and in subsequent years, that of the British Columbia Scientific Cryptozoology Club, CryptoSafari International, and other international organizations. He was also a Life Member and Benefactor of the International Society of Cryptozoology (now-defunct). Loren Coleman’s daily blog, as a member of the Cryptomundo Team, served as an ongoing avenue of communication for the ever-growing body of cryptozoo news from 2005 through 2013.


5 Responses to “Japan’s Mystery Kangaroos”

  1. kittenz responds:

    The creatures are, of course, Japanese otters. They hop like that so that no one will mistake them for housecats.

  2. dogu4 responds:

    Ha ha! Leap year indeed! Stories like this put me squarely into the Loren Eisely camp when it comes to human’s role in expanding distribution of interesting species.
    Coincidentally I just ran across a bit of etymological insight regarding the origin of the word “marsupial”, and see it comes from the latin word for ‘pocket'; how appropriate that these marsupials are finding a home in the land of the “pocket monsters”, aka: pokeymon. Shining eyes, you say? Who, but the japanese, would include that little detail in describing these thoroughly engaging quasi-cryptids.

  3. TheHighlandTiger responds:

    Wallabies can happily live in the wild in Scotland, so Japan would certainly not be much of a problem

  4. cryptidsrus responds:

    Yep, they’re otters, allright… LOL.

    That was so funny I almost spilt Mr. Pibb out of my nose, BTW. “Thanks” a lot, Kittenz. :)

    Thank you for the column, Mystery_Man. Great, as always. Yes, it does look like we have escaped pets here. Most probably Wallabies but I will not rule out Kangaroos. Like Mr. Obara said, Kangaroos can be very adaptable.

    Particulalry Eatern Greys.

    Maybe the Japanese parliament will reconsider its stance on owning and selling these critters now that there is very reliable evidence that some escaped pets are roaming around Dai Nippon, wouldn’t you think, Brent???

  5. mystery_man responds:

    Cryptidsrus- I’m glad you asked, and as someone with experience in this matter, I feel somewhat qualified to try and answer your question.

    First, it is important to understand the state of legislature concerning invasive alien species in Japan.

    For a country that faces numerous threats from introduced species, Japan has generally been very slow to enact measures to fix the problem and preserve its own ecological heritage. First we had the Plant Protection Act, which dealt with oraganisms harmful to agriculture, as well as the Livestock Epidemic Prevention Act, which dealt with preventing epidemics in livestock. However, these laws had highly specialized objectives, and didn’t really address the overall problem posed by invasive species in Japan as a whole.

    It wasn’t relatively recently that increasing research demonstrating the adverse effects of invasive alien species on the native Japanese ecology (of which I have actually contributed) led the Japanese government to really start looking carefully at the overall problem of invasive species and the implications they hold for the ecology here.

    An in depth investigation into the effects of invasive species was launched, and there was coordination between various ministries and agencies to this end. In 2002, the Japanese Ministry of Environment summarized it’s findings in a report entitled “Policies Regarding Invasive Alien Species.” This in turn led to the “Draft Legislation Pertaining to the Prevention of adverse effects on Ecosystems caused by Invasive Alien Species,” which was submitted in 2004, approved, and subsequently put into effect in 2005.

    The aim of this legislation is to impose regulations on the transport, raising, import, carrying, and sale of certain invasive alien organisms. There are even provisions contained in the act that call for the eradication of invasive species. The legislation stipulates that an “invasive alien species” is defined as “species which exists outside of their original habitats or breeding areas due to having been introduced to Japan from foreign countries.”

    The legislation, however, is not all inclusive. Only certain selected items are subject to these regulations, and these specified items are put onto a “watch list.” Items on the list include various animals, fish, insects, parasites, eggs, seeds, and even the organs of some organisms. There was an original designation of only 37 invasive alien species made in June, 2005, and an additional 47 specified species included in December, 2005. Additional species have been added since, but it has generally been slow going and some dangerous organisms are still not targeted by the new laws.

    The selection of organisms for inclusion on this list is conducted by a panel of experts, including biologists, conservationists, and forestry officials, as well as individuals with relevant specialized knowledge or experience. Only specified items on this watch list are controlled. If something is not on this list, it is not subject to the law. Species that are not technically on the list, but are related, can be subject for immediate review by the panel.

    To my knowledge, kangaroos are not yet a species included on this watch list and as such are excluded from regulations. I think one challenge facing any sort of adoption of regulations on kangaroos is that typically it has to be shown that the species in question poses some sort of threat to either humans, the environment, or to agriculture. I do not think this can be demonstrably shown to be the case with these Japanese kangaroos at this point. One or even a small group of the animals are unlikely to cause much significant ecological damage unless they start breeding and increasing in number.

    Unless the kangaroos start popping up in other areas, start breeding on their own, or can be shown to be a threat, they are probably not going to added to the list. Even if legislature is put into effect against the kangaroos at some point in the future, the law stipulates that anyone who has legally owned a banned animal since before the law’s enactment is permitted to continue raising that animal for no more than one generation unless it can be shown that the animal in question will outlive its owner (which is a very real possibility with animals with long lifespans).

    Kangaroos live reasonable long lives, and a lot of people in Japan own them currently, so law or no law, it seems that we could have them popping up from time to time into the foreseeable future.

    Anyway, hope this has shed some light on the subject for you.



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