Be careful, pet owners. (Clay Jackson/The Advocate-Messenger via AP)

Late last week, Trevor Moore Courtney visited a California apartment complex, authorities say. He brought his dogs along, according to reports, but didn’t take them inside. Instead, Courtney allegedly left the four animals crated in his SUV without food or water.

A few hours later, three of the dogs were dead.

“The deputy said that three of the four pit bulls inside of the vehicle were obviously deceased,” Sacramento County Sheriff’s Sgt. Lisa Bowman told the radio station KFBK. “The fourth was in such distress, the neighbors were actually trying to soak her in buckets of water just to get her to cool down.”

The fourth dog was later euthanized. It was suffering from renal failure after the incident and couldn’t recover, David Dickinson, of Sacramento County Department of Animal Care, told The Post on Monday.

“She’s depressed. She’s bleeding out, and she’s vomiting. It’s sad,” senior animal control officer Libby Simmons told News10 earlier in the weekend. “It’s sad, and it’s completely preventable.”

You hear a lot about children who are involved in hot-car incidents during the summer months, but they can be a danger for pets, too. For example:

• A Canadian dog walker is facing animal cruelty charges after six dogs she was caring for died of heat stroke this May, the Vancouver Sun reported.

• A Florida woman was arrested after she left her dog Waldo inside a hot car while she browsed at Walmart in June. She was reportedly in the store for about 13 hours, according to the Pensacola News Journal.

• A family traveling on a ferry lost a pet pug after it was told that passengers could not stay with animals while crossing from Calais to Dover, and also couldn’t remove them from cars during the journey.

“I saw Merlin lying down. [My husband] got in and shook him saying his name. He saw he wasn’t moving and he pulled him straight out and Merlin was floppy,” the dog’s owner told the Daily Mirror. “We started pouring water all over him. Other passengers came to help, pouring water. It was manic.”

Courtney told investigators that he meant to go check on his pets but forgot, according to Dickinson, who said authorities are often contacted about pets in hot cars during the summer months — though those calls generally don’t end with an animal’s death.

“It doesn’t matter how many times we notify them … every year we get the same calls over and over again,” Dickinson said. “People just don’t realize how hot it can get in a car, in a parking lot, in the summertime.”