Would you mind rephrasing your comment, as currently I really don't understand what you're trying to say at all...

For example *"Humans think they are whale food"* - the story in the comment you replied to is about Killer Whales (aka Orcas, which aren't actually whales as their other name comes from them being "killers of whales", not "whales who kill", but I guess they're what you meant when you said whales) bringing things to the humans which both Orcas and humans consider to be food, like dead fish. So your implication that humans were wrongly thinking.. what, that fish actually aren't something they eat? Or that humans don't eat fish? Or...

And then I'm guessing the rest of your comment is about the thing some pet cats do of bringing something they consider food but that humans don't, like a dead mouse, as a gift to their human owner... but I'm only guessing that as I can't think what else you'd be saying about cats. Though even with that guess I still can't guess what your point is.

(Sorry I'm not trying to be mean or rude by picking your words apart, I just think you might have commented in a hurry and will realise on reading it back that you didn't say what you were thinking - or maybe the problem is on my end, and someone else will be able to jump in and explain what it is that I'm failing to understand!)