Just had an older male (10 years old) diagnosed with terminal throat cancer. He's never been bred so I was thinking about collecting some semen and keeping it on ice for a younger bitch that I have. The vet said it was a bad idea because the cancer could be hereditary. Not sure what type of cancer it is as the wife spoke to the vet. Is cancer in dogs genetic or caused by various exposures? He's a good dog, but if cancer is genetic then would be collecting the semen just continue the cancer threat? None of his surviving siblings (2) have been diagnosed with it. Anybody with experience dealing with this? Thanks.