Animal control officers discovered 85 pets in a "hoarding situation" in northeast Minneapolis on Tuesday, WCCO reports.

Among the rescued from the home in the 2400 block of Jefferson Street NE, were 49 cats, four dogs and three guinea pigs. Nearly 30 animals didn't survive.

The former pets' owner, a 56-year-old woman, was living in filthy conditions and could face criminals charges for animal cruelty and neglect.

Terri Derr, a veterinarian at Minneapolis Animal Care and Control, tells WCCO that the condition of some of the animals is the worst she's ever seen.

"Many of the cats have forgotten how to walk because they've been in such tight quarters," Derr said while she examined a grey, tabby mix with white fur that had turned yellow due to living its own urine and feces for a long period of time.

The remaining pets are in various stages of health and could be ready for adoption next week.