Should comic characters have four fingers or five? T

In this picture I’m thinking having both Betty and Jimmy on one dolphin is looking crowded. Perhaps I could use another dolphin. I’m going to think about it.

Here I’m thinking of a way for Dylan to introduce the second dolphin. I’m thinking the new character would be his sister, Dolly Dolphin.

I’m also thinking that all of my anthropomorphic characters might look better if they had 5 fingers. Hmmm. Real hands are harder to draw, but they look better. Just glancing at them, my brain says they look weird, like their little finger has been cut off. That’s a chilling thought for a children’s picture book.