Eh. She may have overrated, but, as a former zoo volunteer, I can see her point. We had a walrus (and a "famous" one at that) die because I kid threw a pinecone in the enclosure and the walrus ate it. In controlled environments where the animal's diets are very strictly regulated, it can effect them differently than animals outside of those environments.
A walrus or other animal I could see. These goats in a petting zoo that are eating 50#s of those pellets a day, she was wigging out. Might have been 19-20 at oldest. You see kids almost jamming those pellets down their throats. I figure the paper was a little fiber and pushed it through. I had to go find another map, so I didn't feed it to it. Another guy was booted because he grabbed a goats horns and held them because he kept butting him and a kid around him, he was just trying to get the kid away. She thought he was beating on it.