The argument leaves a lot to be desired

Fish, as we know from their name, are slimy, cold, and suspicious. This, and most emphatically not deliciousness, explains our willingness to eat them. Thus, it is imperative that fish be renamed 'sea-kittens.' Or so reasons PETA. If you agree, you can sign the petition here.

Let's see how well it works:

Many people have never stopped to think about it, but sea kittens are smart, interesting animals with their own unique personalities—just like the dogs and cats that we share our homes with. Did you know that sea kittens can learn to avoid nets by watching other sea kittens in their group and that they can recognize individual "shoal mates"? Some sea kittens gather information by eavesdropping on others, and some—such as a type of South African sea kittens that lays eggs on leaves so that they can be carried to a safe place—even use tools. |PETA: Fishing Hurts|

Speaking only for myself, I didn't find that the change of name helped. But then, I don't much like kittens. Or it could be that in this paragraph anthropomorphic equivocations do all of the work.

Just to take one example, "Some sea kittens gather information by eavesdropping on others." Sea kittens eavesdrop? How quirky they must be! Of course, they don't really eavesdrop, not as we understand the term. To eavesdrop implies, for us, a cultural conception of privacy, a capacity for sneakiness, a language, and so on. Sea Kitten eavesdropping, in contrast, implies none of this. It just requires something that looks, from the outside, a little bit similar. Something like a sea kitten responding to a signal even though that signal was not directed at it. That kind of behavior is remarkable, but it isn't eavesdropping and it doesn't provide any evidence that a species (species!) of sea kitten that does it has a 'unique personality.'