Looking for an Arthur episode, basically it’s an episode about his dog Pal and there’s an imagination sequence where he is thinking of what to call the dog including Buster and in this sequence the dog transforms into dog versions of Buster and Binky respectively.
Arthur’s New Puppy
https://arthur.fandom.com/wiki/Arthur%27s_New_Puppy_(episode)
Thank you.
You’re welcome!
Solved!