Yes, it was, and you have not been drinking.... A hippo's sweat is red, and the animal can look pink under the right conditions. But this young one from Kenya's Masai Mara appears to be a genuine pink hippo, or at least mostly pink. A partial albino is one possibility, but wildlife photographer Will Barrard-Lucas reports the hippo is "leucistic," meaning it has greatly reduced pigment but doesn't go all the way to albinism. Such animals may not grow up, as they are more visible to predators and more prone to sunburn than normal hippos.
Thanks to Loren Coleman for the pointer to this item.