Breeding occurs throughout the year. Females reach sexual maturity at around two years of age while males reach sexual maturity at around one year of age but males normally do not establish territories and thus gain breeding rights until they are about three years old.
It would be unwise to consider breeding from an ageing dog as the risk of complications is considerably increased. At this age, a Border Collie would be 50 years old in human years and is considered a senior.
six to seven months for males and seven to eight months for females.
Only males at breeding season
The minimum age for breeding any female is 1 1/2 years or their third heat, whichever comes first. That is a standard age for any breed. The males can begin breeding as soon as they start producing sperm which can be from 7 to 10 months.
Selective breeding for particular traits
Keep males and females separated.
A border collie will attain his/her full height by around 8 months. Females and neutered males will fill out up to 24 months. Un-neutered males will fill out in their 3rd year. The head will grow noticeably larger and the frame will fill out with muscle, and in this way they become distinct from neutered males. They may add as much as 20% more weight in the 3rd year.
Predators and the alpha-males of whatever species you mean.
Hi there, we have a male border collie at home he is just over 1 years old. He weighs about 14kgs. he gets out and about often. hope this helps
Horses can start breeding about the age of 2 or 3 years Linc 14 ; )
my full grown male border collie weighs 20kg, he is 22 inches tall at the shoulder. Normal weight will differ for gender, age, and height of the dog, but should be around 35-35 pounds (14-20 kg) for males and 27-42 pounds (12-19 kg) for females.