Females have their first
estrus cycle after their six month birthday, but this varies from dog to dog.
Not exact matches
Most cats will have an
estrus cycle (the technical name for heat) within six to eight weeks
after giving birth.
Generally speaking, most Greyhounds» first
estrus cycle occurs later in life than non-Greyhound dogs, occurring near or
after 12 months of age.
Pyometra usually occurs two to eight weeks
after the last
estrus («heat
cycle»).