Cannabis use disorder is on the rise, affecting about 3 in 10 people who use marijuana, according to the U.S. Centers for ...

From sudden outbursts to unpredictable mood swings, erratic behavior can leave a trail of confusion and frustration in its ...

A new study has identified a specific brain circuit that can push behavior into a compulsive “repeat mode,” forcing mice to continue digging and sniffing even when rewards are available.

Serum melatonin levels are lower and peak later in patients with methamphetamine use disorder than in those without, ...

Dogs love toys. Whether it’s that first stuffie they get as a puppy or the ratty old relic they still drag around as a senior dog, they are absolutely devoted. But can a dog ever love a toy too much?

Have you ever seen a dog playing slot machines in a casino? Probably not, but you might have seen one that really likes to play with toys. A new study shows that there might not be much of a ...

Addiction to toys can mirror human addictive behavior in some dogs. Image: Alexandra Jursova via Getty Images. Get the Popular Science daily newsletter💡 ...

Your dog probably goes crazy for its favorite toy, but do they love it a little too much? In the dog training world, pups that are highly motivated by toys are often referred to as "ball junkies." ...