Cats:
You are not my master. You are not my keeper. I live here because it is convenient for me. You will pamper me now. Good. Now, for having the honor of pampering me, you shall now feed me. Good. Now, for having the honor of feeding me, you shall let me use your bed. No, I don't care if you need it. Good. Now, for appeasing me I present you with this token of my appreciation.
Oh, you don't like dead mice? That's fine. You can have the honor of pampering me instead.

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Human comparison: Material Girls.
Dogs:
Food! That is so awesome! you are so cool! You can like, make food magically appear out of that magic cupboard! You are so awesome! Dude! I got you the paper! Sorry, but I think I drooled a little on it, because I was thinking about how awesome you where! C'mon let's play! Play! Play! You're tired already!? But I want to play! Food!

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Human comparison: A five year old with ADHD on speed.
Rats:
Lemme out of this cage now please? Come on, I promise not to chew the TV cable again. Honest… Haha! Freedom! Come on lads; let's show this twat what happens when he locks us up for a few days! We're goanna climb on everything knock stuff off the top shelf, treat you like a mobile climbing frame come food dispenser, chew your stuff, try to gnaw our way into our food tin, mess up your bed and then hide in the most inaccessible area of your room. Ratolution! Ratolution! Down with the bourgeoisie human reign! Oh, you've got sweeties…? Well, you've purchased our pacifism for another day. We're still going to watch you while you sleep though, and when you wake up and turn on the light we'll be there... leering at you, ensuring you know who's the real boss…

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Human Comparison: Teenagers who wear Che Guevara T-shirts.
Fish:
Oh God not again. Tap tap tap… I didn't do anything the first time you tapped the tank six months ago you stupid prick why would I respond now? God I HATE this place. Oh, another fish. Interesting. Oh look, a new castle. I wonder what's inside. Nothing. Interesting. Oh look, another fish, interesting. Oh food. One perk of living in this… where am I again? Oh look, a new castle. I wonder what's inside. Nothing. Interesting. Oh for the love of god will you stop tapping on the bloody tank!?

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Human comparison: Cranky old amnesiac.