On several occasions, I've seen high school age idiots that try to sell something, even if it's _not_ in the buyer's (or the animal's!) best interest. I've always had a bit of a problem with that.
Worst instance was nearly twenty years ago now, at an LFS in KC, long since out of business, thankfully. Kid, probably 12, and his mom were at the shop, picking something to put in his new 20g saltwater tank. They'd sold him a damsel a couple weeks before, wanted to get something interesting. Kid locked in on a blue ring octopus they had. Yeah, you don't see 'em anymore, but they used to be fairly common. Anyway, idiot high school kid was gonna bag it up and sell it to mom, without ever mentioning the fact that the dang thing was lethal. I said something, lady grabs her boy and leaves, kid is mad at me for killing the sale.
Saw a kid talk his mom into a cute little lizard once. Boxed it up, and walked out of the store, guy at the counter never said a word. Baby water monitor. In a year, it would have outweighed the kid. Oh well. Every chance the kid killed the monitor before it was big enough to eat him.
I get it... LFS's are in business to sell stuff... but I'll never understand why they'd do this sort of thing.
It's not just pets. My other hobby is firearms. Young woman goes in saying she doesn't feel safe at home alone. Guy at the counter nearly always grabs a compact .22 pistol off the shelf. Worthless, for self defense.
