I don't believe in Karma, but if I did I wouldn't believe it would occur with animal species. They're not capable of learning right from wrong, in some cases.
It's a hard thing to say, as no one knows about the intellectual level of animals.
While I think that everyone and everything is affected in some way by karma, I don't think they are as affected as we, humans, are.
Karma is not a aware being, it does not reason, it does not think. Karma isn't anything special.
If you do good, it's very likely you'll be rewarded for that. Not by karma, but by society.
If you do bad, it's very likely you'll be punished for that. Not by karma, but by society.