You know," Gabriel said, "there was a time I thought we could be friends, Will."

"There was a time I thought I was a ferret," Will said, "but that turned out to be the opium haze. Did you know it had that effect? Because I didn't.

Passion comes from within, but you can find it anywhere.

The ferret sat and examined his foot "What in the world am I?" he asked, alarmed "I look like some sort of rodent!

OH NO YOU DON’T, LADDIE!”
Harry spun around. Professor Moody was limping down the marble staircase. His wand was out and it was pointing right at a pure white ferret, which was shivering on the stone-flagged floor, exactly where Malfoy had been standing.

If a ferret bites you it is nearly always your own fault.

Well, I don't really understand how you can do that. Why not have a Chihuahua and a ferret? The more the merrier.