Originally posted by nibblets
They are made of some sort of soft rubbery substance so they are not uncomfortable for the dog and the male owner's macho can stay intact too.

Neuticles
They are made of silicone and they do have the same type of prosthetics for men who have had surgery for one reason or another!!

http://tcrc.acor.org/implants.html

But,
Would you buy my record??