Three of my four cats are former rescues / strays, and all needed deworming. There’s a lot of yuck in the world.
Really!? Wow. All mine are rescues and all have been spayed/neutured and have had their shots so were thoroughly checked out by our vet and none of them have ever had worms. I guess we’ve been lucky! Ear mites? Yes. Fleas? Yes. No worms. How do you know if they have worms? They don’t gain weight? It pops out in their stool?