No. They do have surprisingly long digits and long claws that allow them to nimbly climb everything. read more
Polar bears do not have opposable thumbs. Opposable thumbs are ableto bend so it can touch the other digits on the hand or foot. Thisfeature is a signature to primates. read more
I used to hand feed squirrels in a park and I noticed that they seemed to have thumbs & used them-like thumbs, when climbing trees, when grasping items. read more