Wouldn't evolution suggest that there should be a greater range of intelligence in nature between bacteria, goat/cow/chicken, dog/dolphin/chimpanzee, and human?
It's pretty much biological response only, survival instinct, basic input and response, and then language, problem solving, love, society, laws, and programming artificial intelligence and self driving vehicles.
It's one of the reasons I think evolution is a natural occurrence of the environment and ecosystem set in place by an intelligent design, not the thing that created the ecoaystem itself.