I remember seeing a story in Readers' Digest about fifty years ago, that said the red squirrels
were going to drive gray squirrels to extinction. How? By gnashing their knockers off, biting
their gonads off, gelding them, deprivi;ng them of any posterity.. But it never happened. I wonder
why. I never saw a gray squirrel wearing a tin jock.

Edit: From the Internet. I can hardly believe it, the Readers' Digest printed a lie!

"The breeding season for red squirrels begins in late winter, with 3-6 young born in April, May or June after a 40-day
gestation period. Reds have strong territorial instincts, often defending food sources and den
trees against intrusion. The story that red squirrels castrate gray squirrels is untrue, although reds will aggressively drive off trespassing grays. "