Quote from AAAintheBeltway:
Wiser minds have already worked this out. Take the guys age, divide by 2, then add 8 years= ideal age for the female. Thus, for a 22 year old guy, a 19 year old girl would be ideal. For a 40 yo guy, a 28 yo woman. I've found this to be pretty accurate, but I'd be willing to make an exception for you, mytwocents.
Does that also work for canines or do you have to take into account the dog-year multiplier? If so, I wonder how old the perfect beau would be for Mackenzie, the mixed-species mongrel?
