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.
Small breed dogs typically start having estrus (heat) cycles earlier, at 4-6 months of age, while large breeds typically start later, at 9 to sometimes as late as 24 months of age. Estrus cycles can vary between each individual dog, an average of 6 to 12 days. Some cycles can last as few as 2 days, while others can last as long as 21 days.1 Female dogs cycle throughout their life and do not experience menopause (reproductive cycles ceasing with age), like human females do.