Leave it to Terry to be full of crazy amounts of random knowledge.
For instance, we were watching TV when out of no where Terry tells me the following piece of information:
T: "Did you know that a Rhinoceros's horn is not bone?"
M: "No, what is it then?"
T: "Just a large ingrown hair. Well it is really just the same material that makes up hair."
M: Just laughing at the randomness
T: "Yeah, fish scales are made of the same stuff. Alot of animals have stuff made out of Keratin."
So I googled and yes he is right (like flipp'n always).
The horns of a rhinoceros are made of keratin, the same type of protein that makes up hair and fingernails.
I just felt I should not be the only person who hears this random piece of information today.