A few years ago, my former housemate’s dog ate weed — a cannabis-infused brownie, to be exact. She connected the dots when she noticed her normally docile, sweet-natured chihuahua mix fearfully snapping at anyone within reach — and the disappearance of the weed brownie she had stashed in her purse. The high wore off eventually, and luckily, her pupper was just fine. But what exactly happens when your pet accidentally eats weed, and what’s the best way to handle it?

Amid the rising tide of cannabis legalization and growing acceptance of the substance overall, pet owners have probably begun asking themselves these questions more often. Indeed, there’s evidence to suggest these accidents might become more common. One study found that during a steep rise in medical marijuana registrations in Colorado between 2005 and 2010, marijuana toxicosis cases in dogs quadrupled at two veterinary hospitals in the state.

Dogs are far more likely than any other pet to eat your weed brownie, Steven Friedenberg, an assistant professor at the University of Minnesota College of Veterinary Medicine, tells Mic. “We see dogs being a lot more curious about things and interested in eating everything than many other species.” Cats, on the other hand, tend to be much more finicky about what they eat.

If your doggo does get into your stash, it’ll take roughly 30 minutes to an hour for the weed to take effect, says Karl Jandrey, a professor at the UC Davis School of Veterinary Medicine. Intoxication in dogs looks similar, but not the same, as it does in their humans. Physically, they might have unusually dilated pupils, a slower heart rate, and difficulty walking, if they can walk at all. (In severe cases, they might just lie still.) They also often dribble urine uncontrollably. Behavior-wise, they tend to startle more easily and be warier of people they normally trust.