Bought some dried catnip leaves once and let my cats smell the bag. They looooved it.
They'd claw heaps of dried catnip out of the bag onto the floor, lick it, eat it and
roll around in it while heavily purring.
Goats love to eat Khat leaves, Deer & sheep love to eat psychoactive Lichens from rocks,
Gorillas dig up and eat Iboga roots, Jaguars in the amazon love to eat B.Caapi vines,
Deer love to eat Amanita mushrooms or the urine of shamans that ate Amanita Muscaria...
People have learned to use all these drugs by observing these animals eat them and mimicing them.
Like proto-pax said: There's nothing strange about the use of drugs. Humans and oher animals have
been using drugs forever. The tabboo additude & the prohibition of drugs: Now THOSE are strange activities.