Back in the 1970s, one of my aunts was really into chimps dressed in people clothes doing people things. She had posters all over her house with doctor chimps, fireman chimps, cowboy chimps, etc.
They all horrified me mostly because the chimps were all baring their big scary teeth. Undoubtedly, the photographers thought viewers would interpret this gesture as a "smile".
Anyway, I'm sure my aunt watched this show and thought it was "adorable".