Refuge for Endangered Wildlife: Grizzly Bears

Grinder

 

Coola

Grinder was found orphaned June 5, 2001 in Invermere, British Columbia. He was wandering alone on a logging road, dehydrated, thin, weak and weighing only 4.5 kg. His mother was never found so how he came to be alone is unknown.

Grinder is a very outgoing, high-spirited bear. He is usually the first to investigate anything new and explore the unknown. He has established himself as the dominant bear, despite his smaller size, and he often shows much more 'attitude' than Coola. He is usually the one to initiate the bouts of wrestling and play fighting.

Careful observation has revealed that Grinder predominantly favours the use of his right paw for grasping and manipulating objects. This would make him right-handed (or is it right-pawed?). Although he does enjoy swimming in the pond, he does this much less frequently than Coola. One of his favourite pastimes is people-watching and he can usually be seen scrutinizing our visitors.

 

Coola was found orphaned at the side of the highway on June 29, 2001 near Bella Coola, British Columbia. His mother had been hit and killed by a truck. Of her three cubs, Coola was the only one to survive. One cub was hit by a falling tree and the other ran away and was not seen again.

Coola is a very easy-going bear with a cautious and careful disposition. He is quite introverted and seems content to let Grinder take the lead in new discoveries.

He shows a definite preference for swimming and aquatic games and can most often be found submerged up to his neck in the large pond. He likes to keep his 'bath toys' on the bottom of the pond and can be seen carefully feeling around underwater for them. These usually consist of a large bone, a favourite rock and a log. He brings these up for playing and will hold, throw and balance them on the top of his head for entertainment. None of these toys are ever found away from the pond. We believe he may be keeping them underwater to hide them from Grinder.

He favours the use of his left paw for holding and manipulating objects. This indicates that he is most likely left-handed (pawed). His bed-making abilities are outstanding and the previous two year's hibernation beds were assembled entirely by Coola. He dragged in large branches and rearranged them until the den was lined with a comfy 2ft deep mattress.

His voice is a very deep baritone but he seldom vocalizes it. He can only be heard during the occasional argument with Grinder.

Grinder & Coola's Hibernation Record
Grizzly Bears are not 'true' hibernators. Instead they have a period of extended sleep called 'dormancy'. They do not eat or drink until they emerge again in the Spring. Extra fat is accumulated in the autumn to maintain them over the 4-6 month hibernation period. By Spring they may have lost 30% of their body weight. Hibernating bears will awaken and move around during the winter months, unlike other hibernating animals that cannot easily be roused.

 

Hibernation Year

Time Spent Hibernating 

 

Winter 2001/02

 3.5 months

 

Winter 2002/03

 2.25 months

 

Winter 2003/04

 3 months

 

Winter 2004/05

 2.25 months

 

Winter 2005/06

 4 months

 

Winter 2006/07

 4 months

 

Winter 2007/08

 4 months

 

Winter 2008/09

 4 months

  Winter 2009/10  4 months

For interesting details about grizzly bears like Grinder and Coola, visit the Bear Facts.

Take Your School to The Wildlife Refuge
Children can learn firsthand about endangered wildlife with our fun, interactive education programs designed for school groups.

Volunteering
The Wildlife Refuge research team is exploring ways to conserve and protect species native to BC. If you'd like to be involved, please contact us at 604.998.4257 or by email at refuge@grousemountain.com.

For more information about the Grouse Mountain Refuge for Endangered Wildlife, you can call us at 604.980.9311.