Day 13 in Rio: Bolt goes for second gold 3min. It's day 13 of Rio 2016 and there are 23 gold medals up for grabs across 11 events. He may already have seven Olympic gold medals to polish but Usain Bolt wants more. The Jamaican sprint star goes for the 200-meter title, Thursday. American Ashton Eato...
Ready to Breed. The accepted guideline for breeders is that a dog should not be bred before her second heat season. In most breeds, this occurs between 1 and 2 years of age. Gestation takes 61 to 65 days from conception, so a typical midsize female dog could whelp her first litter around age 2.
Breeding Dogs: The Tie. Male dogs can start to have sperm at seven months old, but ten months is more common. Young dogs do not have quality sperm. Almost all dogs will have sperm by one year. Stud dogs are at their prime between 18 months and 4 years old (or 5), after that, the quality of the sperm starts to lessen, and the ability to penetrate eggs, lessens. By 10 years old, most stud dogs do not produce sperm that will impregnate a bitch. A tie is a natural phenomenon of dog breeding in which the bulbus glandis of the male's penis swells inside the bitch's vagina.