One show that features animals as basically “humans with animal heads” is the Netflix show Bojack Horseman. They are completely animal in the head and completely human in the body down to having completely human hands and feet and not having a tail even if their species has one.
Unlike Arthur, there are no Informed Species, animal characters that have a species name, but hardly or very vaguely look like the species that they are said to be (like Taz the Tasmainian devil in Looney Tunes, Crash Bandicoot, and Sonic the Hedgehog). Informed Species can also look like a completely generic form of a given type of animal despite having a specific species name of that type of animal (like Baloo from the Disney animated The Jungle Book having the look of a generic bear despite being called a sloth bear).
Interestingly, the animals show a fair number of Furry Reminders, behaviors that remind the audience of the species that the given characters are outside of their appearance. Also, the chickens at the chicken farm in one episode, including one named Becca, behaved like normal, nontalking chickens despite wearing clothes and being as anthropomorphic in body shape as all the other animal characters.
Fictional Animal Tropes and Representation 