I've seen coyotes jump/climb a fence... they got into a llama pen and killed all but one of the llamas about 2 years ago out here close to where I live. It was awful.

Letting the friend have them is a very selfless thing to do. It's a hard decision, and I know it hurts. Thank you for considering the well-being of your pets above your own feelings. That's what responsibility is all about. Good job.