I have got a 12 week old male cross bred puppy, and his testicals
are not showing, is this normal as I have never owned dogs before, only bitches, so it was not something I thought to look for. He has had all his injections, so my vet has not seen him yet. Jill

12 weeks is early to start to worry, they can in some breeds be as late as 12 or even 14 months.