Ambiguous Cartoon Critter

 

Here's a picture of the cartoon creature in question - the model is clearly concerned over what it is. 

After polling many people, we had suggestions of mouse, cow, sheep, bear, dinosaur, puppy, lamb, and koala. I was thinking it's a mouse but upon seeing all the suggestions, leaning towards a polar bear. The critter is repeated on the feet of the sleeper but looks roughly the same there so no help from multiple angles. But it's still a cute outfit, even if we don't know what's on it.

Text:
M: Is that a mouse on her sleeper? Or a ... cow?
L: It's a cute little ambiguous cartoon critter.