An animal that feeds on this substance relies on endosymbiosis with Oceanospirillales bacteria. Cattle feeding on this substance is often an early indicator of a bovine botulism outbreak. (-5[1])The Epicyon and Borophagus genera of Miocene–Pliocene canines developed several adaptations for feeding on this substance. A genus of annelids often called “zombie worms” (-5[2])obtain lipids from this substance from whale carcasses. The turkey vulture is the only vertebrate (10[1])that primarily feeds on this (-5[1])substance. Three of the four species of modern hyenas are named for their ability to “crush” or “crack” this substance. Herbivores like giraffes (10[1])may chew on this substance to obtain sufficient calcium and phosphate. (10[1])For 10 points, osteophagy refers to feeding (10[1])on (10[1])what hard, mineralized tissue? (10[1])■END■