Your answer has already got many replies but i want to add my animal jokes collection also.
Two tigers are walking along a jungle trail in single file. The rearmost tiger wanders off the trail for a few minutes, then reappears shortly thereafter. A few moments later, the front tiger feels what seems to be the other tiger’s tongue, applied just below his tail. The tiger disapproves of this action, but doesn’t want to start anything by bringing it up. Then, the tiger again feels the tongue, again in the same place.
He decides to confront the after tiger, and asks him, “Did you just lick me twice in the butt?”
The other tiger replied, “Yeah, sorry about that. I just ate a lawyer and I was trying to get the taste out of my mouth.”
2.A man follows a woman out of a movie theatre. She has a dog on a leash.
He stops her and says, “I’m sorry to bother you, but I couldn’t help but notice that your dog really seemed to be enjoying the movie.
“He cried at the right spots, he moved nervously in his seat at the boring parts, but most of all, he laughed like crazy at the funny parts. Don’t you find it strange?”
“Yes,” she replied, “I found it very strange. He hated the book!”
http://www.funshun.com/jokes/