that there aren't more games where you play as a dog, like in Dog's Life. There's so much potential. You could chase mailmen, get dog experience points that you can spend to enhance your smell/food begging skills. There can be minigames involving sniffing other dogs' butts, or licking yourself, or scratching yourself. Perhaps you could even uncover evil plots by real-estate developers who intend to demolish your favorite park, or something. You could make friends with other dogs in the neighbourhood, and entice them to follow you on adventures, like chasing cats, if you can manage to break them out of their owner's backyard.
Perhaps a cat game could also work, where it's your soul mission to make your 'owner's' life miserable, like scratching up the furniture and coughing up hairballs into their breakfast porridge.

Also, why aren't there more games where you play as a shark ?

Well there's Catlateral Damage and Cat Goes Fishing.

I am waiting for SLOTH SIMULATOR

Nintendogs... Anyone??

That's what I'm talking about it. I think I'll install catlateral damage later tonight!

Gotta hand it to Frontier Developments: Elite, LostWinds and Dog's Life. I just wish they'd released The Outsider.

Anyway, try Domestic Dog Simulator. It's short and goofy, but people generally like it.

Those are some funky looking dogs

In Harry Potter 3 you can play as a rabbit.

The only rabbit I've ever played with was this one:

And let's not forget Dog mode in Rise of the Triad with the super-bark ability ;)

Me too!

I remember looking turtles and seeing that

Edit: neighbor had infact just that. There was many Shredders tough. normal looking and that which prob had some armor. worst thing ever was when we all wanted to be boyfriends with that april.. Like the same thing when you play Double Dragon.. Billy prob had the girlfriend and second player was Jimmy and even in the beginning of the story.. "What I am saving your girlfriend in here what do I get?"

Well, there's the Domestic Dog Simulator...

Not exactly man's best friend but there is also this.