Well I have proof that it is!!! If you look at the video evidence, you'll clearly see that there is a clear setup going on before the actual event occurs.
My Belgian Malinois takes every opportunity to jump on my nuts when we're playing at the park. She's an asshole sometimes. But yeah, I think the microchip implanted under her skin makes her do it.
I think it is breed into them. I had a half Doberman, half German Shepherd who loved to stick her nose into people's crotches. Had she been full-breed, she would have been chewing at dicks like they were rawhide toys.
When you consider that the crotches of most people are right at the level of their heads and it tends to be a softer area on the body and harder to move out of the way unlike a leg it seems somewhat logical that an animal would be more willing to attack there than other places. :dunno: