They asked nicely - Lemmy.world

Turns out I have more in common with lab rats than I thought
Headline: Scientists prove that cocaine makes rats more polite.
And they start talking when using magic mushrooms.
Username checks out.
The actual rats want sugar. The human workers want cocaine.
The Rats Who Preferred Sugar Over Cocaine

If you have an overpowering sugar habit, I want you to know that this addictive feeling is not all in your head. You actually can get hooked.

HuffPost
Would not be so sure about the humans. I think more humans are addicted to sugar than to cocaine.
An excellent point! I stand corrected.

They also want company. Rat park showed that when rats, social animals, have other rats around for play (and “play”) they do not get as readily addicted to morphine as when they are caged by themselves.

en.wikipedia.org/wiki/Rat_Park

Rat Park - Wikipedia

Scientist: uses the cocaine himself as he administers sugar to the rat.
I miss r/labrats…