My friend Allison adopted a stray cat and took him to the vet to be neutered.

"I'm about 90 percent certain he's been fixed," the vet said.

"How can I be 100 percent sure?" Allison asked.

"Watch to see if he does any 'male' things."

"He already lies on the couch all day," she said. "If he starts
hogging the remote, I'll bring him in."