What animal Sweat Pink?

Answer 1

Hippopotamuses, they secrete a pink substance (mucus) to cool themselves off

Answer 2

Flamingoes.

Interestingly, they're actually naturally blue. They sweat a lot.

Answer 3

Yes, in this book I have read that a hippo has pink sweat, but scientifically saying it I do not now.

P.S. I read it in a Japanese book.