What Was the Largest Grizzly Bear Ever Kept in a Zoo?

Written by Colby Maxwell
Published: October 22, 2022
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Grizzly bears are among the most fearsome predators in the entire world. These massive creatures can break bones with a single swipe and can weigh upwards of a thousand pounds! In the wild, grizzlies are untamed and fierce, but captive grizzlies are known to have a cute side to them! Today, we are going to discover the largest grizzly bear ever kept in a zoo. Let’s get started!

The Largest Grizzly Bear Ever Kept in a Zoo

The largest grizzly bear to have ever been held in captivity is between two individuals, Clyde and Goliath.

Clyde

Clyde the bear is easily one of the largest captive bears to have ever been documented, but his story is incredibly unique. Clyde was born in 1965 and was kept at the Dakota Zoo until his death on June 4th, 1987. During that time. Clyde became the single most popular attraction at the zoo, partly because of his size and partly because of his story.

As a grizzly bear, Clyde was large. In fact, Clyde was a subspecies of grizzly bear known as a Kodiak bear. Kodiak bears are still grizzlies, but they are native to a large island off the coast of Alaska named Kodiak Island. The bears on Kodiak Island are often over 10 feet tall when standing on their hind legs, or about as tall as the rim of a professional basketball hoop. Additionally, Kodiak bears can weigh up to 1,500 pounds, making them the second largest bears behind only polar bears. Clyde was a member of this unique group of grizzlies.

While Clyde was a Kodiak bear, he was also the subject of some strange testing. The United States used Clyde in radioactive testing, specifically that of the radioactive isotope Strontium-90.

Clyde was believed to have been born in January 1965. The Federal government originally studied Clyde as a research animal to determine the effect of the radioactive isotope Strontium-90 on wildlife. He was 180 pounds, still a cub, when brought to Bismarck later that year.

Bismarck Cafe
Grizzly bear

Grizzly bears can weigh up to 1,200 pounds and measure 5 to 8 feet tall when standing on their back paws.

©Perpis/Shutterstock.com

Goliath

Goliath the Alaskan brown bear is generally considered to be one of the largest bears ever kept in captivity. This monstrous bear lived in the Space Farms Zoo & Museum from 1967 and 1991. Goliath reportedly measured 12 feet tall and weighed well over 1,000 lbs. While it isn’t stated on any source that Goliath was a Kodiak bear, his size and proportions lead some to believe that he wasn’t just an Alaskan grizzly, but a Kodiak bear.

Sadly, Goliath didn’t live a good life. The zoo in which he was kept constantly topped lists for “worst zoos in America.” Goliath was kept in horrible conditions and reportedly spent his life on a concrete floor.

Back in 1989, Parade Magazine named Space Farms one of the “Ten Worst Zoos In America” (Along with other Roadside perennial, Saunookes Bear Land of Cherokee, NC). In 1990, a follow-up story reported that three of the bad zoos had closed, four had improved substantially, and three were still business-as-usual (including both Space Farms and Saunookes Bear Land). One judge was especially bothered by Goliath’s confinement in a small cage with a concrete floor.

Roadside America

As Goliath neared the end of his life, he developed severe rheumatism. It finally got so bad that Goliath wasn’t even able to stand to get himself a drink of water as he lay dying. In a final act of kindness, he was put to sleep. Currently, his taxidermized body is still mounted at Space Farms and people can see it even today.

kodiak vs grizzly

Kodiak bears can reach weights over 1,500 pounds and stand from 8 to 10 feet tall on their back paws.

©iStock.com/Jess Bray

What Is the Largest Grizzly Bear Ever Recorded?

The largest grizzly bear ever recorded wasn’t actually a living bear, but a bear skull. A taxidermist accidentally stumbled onto the skill in 1976, with measurements being extrapolated from it.

A more complete example occurred in 1954 when the world record was shot in Kodiak, Alaska.

Lindsey’s bear skull measures 17 15/16 inches long and 12 13/16 inches wide for a cumulative score of 30 12/16 points. The bear was declared a world’s record during the Club’s sixth awards competition, held in 1954 at the American Museum of Natural History in New York City.

Boone Crockett

Although it was quite some time ago, this massive bear easily ranks as one of the largest ever. Additionally, it was more than just a skull and that has to count for something!

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The photo featured at the top of this post is © Scott E Read/Shutterstock.com


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About the Author

Colby is a writer at A-Z Animals primarily covering outdoors, unique animal stories, and science news. Colby has been writing about science news and animals for five years and holds a bachelor's degree from SEU. A resident of NYC, you can find him camping, exploring, and telling everyone about what birds he saw at his local birdfeeder.

FAQs (Frequently Asked Questions) 

What is the largest type of grizzly bear?

Kodiak bears are the largest subspecies of grizzly bears.

Are grizzly and brown bears the same?

Yes, grizzly and brown bears are the same species, although there are regional differences among populations.

What is a Kodiak bear?

Kodiak bears are the largest subspecies of brown bears in the world and are exclusively found on Kodiak Island off of Alaska.

Why are Kodiak bears so big?

Kodiak bears are so big because of their geological isolation and extremely high calorie diets resulting from localized salmon runs.

Thank you for reading! Have some feedback for us? Contact the AZ Animals editorial team.

Sources
  1. Wired, Available here: https://www.wired.com/2011/02/demythologizing-arctotherium-the-biggest-bear-ever/
  2. Bismark Cafe, Available here: https://www.bismarckcafe.com/blogs/wiki/clyde-the-bear#:~:text=Clyde%20was%20an%20Alaskan%20Kodiak,most%20popular%20attraction%20to%20date.
  3. Alaska Department of Fish and Game, Available here: https://www.adfg.alaska.gov/index.cfm?adfg=brownbear.trivia
  4. Roadside America, Available here: https://www.roadsideamerica.com/story/3320#:~:text=Goliath%20the%20Bear-,Beemerville%2C%20New%20Jersey,get%20a%20drink%20of%20water.