I thought it was either a horse or a dog. For the horse, the ears seemed a bit too short. A donkey makes perfect sense, haha. Thank you for the lovely puzzle, cute! :)
I thought this was a chipmunk holding an acorn - but the chipmunk seemed to be a kind of genie, without feet... Very good for what it actually is - thank you!
Definitely a German shepherd. Well, probably a German shepherd, but maybe a horse. OK, fairly certain it's a horse. *filling in the last pixel* I see: not a horse. What an ass I've been.