Humans are generally smarter than the other animals, but aren't most other extant animal species as evolved as we are?
In short, no. Humans are far more sophisticated, complex, and intelligent. It's just the way it is. Why fight it? it would be silly. When elephants, dolphins, whales, etc, begin to build, invent, form cities, cultures, make art, literature, deal in commerce, complex languages and grammar, do science, etc, then we can say that they are as highly-evolved as humans, but to our knowledge, not much of this occurs. Though, I do find animal communication and language systems studies extremely compelling. Birdsong, whalesong, these are being studied and amazing things are being discovered. It's exciting. For all we know, birds could have a language as complex as humans, and same with whales and other intelligent ocean dwelling creatures. It is tragic that shipping and all the traffic in the open waters has caused a breakdown in communication networks and systems among whales and other creatures.
Someday, given enough research and time (TIME!) - humans may very well be able to communicate with whales, birds, dolphins, elephants, apes, etc. What a great time it will be for all earth's organisms then. But for now, the way things ARE, I cannot value my cat over a human life, no matter how much I love my cat. And I bristle and become indignant when I see people stating on Facebook, with no second thoughts whatsoever, that they value their pets more than they value human life. I think that's an unacceptable, and ultimately selfish, trend. Selfish because it recognizes local emotional attachments, prioritizes those, and blinds itself to the larger world.
More to come...