Obviously this is a generalization, and there will always be individuals who do not fit this age-related description. This is ... Then, when the dog hits eighteen months and late adolescence, there's another round of assertion, independence (which you may view as disobedience) and aggression. read more
Yes dogs do go through puberty. I call them the teenage years. lol Smaller breeds are fully grown in about a year, while the big breeds can take up to 5 years to fully mature. read more
It depends on the breed and individual. The males of large breeds like mine can reproduce as young as nine months of age while the females experience their first heat between the age of ten months and two years. read more
Raising a Puppy) SIX TO FOURTEEN MONTHS: PUBERTY AND ADOLESCENCE Hormonal changes take place in both the male and female during this time that are similar to the changes that human beings go through during puberty. read more