^Agreed. I think we find beauty in many things, and it's very subjective. For example, even among humans, there are a vast array of appearance factors that people find either attractive/beautiful or not. The same person can be considered ugly or beautiful to two different people. Some people might find dolphins unattractive (though I can't see why they would personally). Some people find spiders beautiful, some find them horrifying and disgusting. I personally think snakes are gorgeous creatures but some people find them repulsive.
I really can't speak to how other animals perceive beauty or even if they do. I'd think that beauty is something that goes beyond simple utilitarianism. I mean there is sexual attraction, which clearly happens with all mammals and some other animals (but not, say, fish, which just reproduce by fertilizing clouds of eggs released), but beauty and sexual attraction are not mutually exclusive, as I find dolphins beautiful but not sexually attractive (on the other hand, dolphins have been known to be sexually attracted to humans on occasion). I'm not sure that all animals perceive beauty, but for those that do, I'd think it would be subjective there as well. And some intelligent alien species somewhere in the universe that takes the form of a blob of slime or something we'd find unattractive may find beauty in forms entirely different to those we find them in.
Art further confounds the question. We find beauty in color and form, and in nature, and in music, and in those things some people find beauty while others do not, in any particular instance.
I personally find the human form beautiful, especially the female human form, which again brings sexual attraction into it. But I'm a heterosexual male human. Could be that chimps look at us like, damn, those are some ugly creatures! So funny-looking with their naked skin and sparse, thin hair.
