That's a huge amount. 15ug/kg would equate to 1200 ug for a 80kg human, which is a lot.
That goat was tripping balls, no wonder it was painting the infinity symbol (8) with its movement patterns :).
Also, the 7000 pound elephant who died, was injected with 297mg of LSD, which would amount to 297,000ug/3175,15kg = 93.5ug / kg, which is insane.
Did those "scientists" even know what they were testing ?
But anyway, interesting results. I'm curious if they tried dosing an animal and a human at the same time to see how human-animal interaction and communication is affected.