So we're in the process of beginning to breed mice, and I was curious to know if there were any requirements for the males to be a great stud for the females? We bought 2 females and a male today, and the male is uh not as "endowed" like most other males we seen. Would the males having larger testicles make any difference whatsoever? The male that we got has very small testicles, but let me tell you what, he's pretty aggressive, and tried to nab me on the finger earlier!
Would the size of their testicles matter? Would their general size matter as well?