It was okay, there was humor there but you didn't make the most of it. The joke itself is important but the way it is executed is equally important. In this case, your delivery was hurt mostly by the blandness of the characters' voices (the characters' voices were also indistinguishable from one another). In other words, because your animated expression is very simple, you have to make up for it with expressive voices (don't hold back on the mic). You got timing down very well in the beginning where the other hamster says "you were watching the documentary, weren't you?", but not so well near the end when the taller hamster decides to go paint the fence instead. The main reason I didn't find the end funny, however, was really because the reason to find it funny was too simple. In the end, the humor was basing itself on contrary common sense, and if incoherent humor is the humor you're going for, then maybe the animated expression and the voice acting should mirror that quirkiness more. Like the voices, this flash had an overall blandness about it, but I admire your effort and can see that you put a lot of work into this. Just keep an open mind and continue to be productive, certain things will become clearer and you'll improve as you go.
Sorry if I didn't explain myself all that well, I haven't reviewed in a while so my analytic thinking is a bit rusty, but by your next submission I'll be sure to get back up to speed and give you as helpful a review as I can! I hope this one was at least a little helpful, though. Nice job and good luck on your next work!