It is quite astonishing how many animals have been shown to suffer from hypothyroidism.
In this case, issues with hair, sweat glands (more of them but poorly functioning), more mast cells (which are very much part of the histamine processes), "poor reproductive performance", ...
Maybe quite a few people here would at least have had an inkling what was going on... ? Before the blood tests!
Image: A male (bull) with a baby (calf) giraffe, Giraffa camelopardalis reticulata at the San Francisco Zoo
Author: Brocken Inaglory