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how does reproduction in dogs begin​

Sagot :

Answer:

2. E.s.t.r.u.s follows, in which estrogen levels are high, mature eggs are released from both ovaries, and females become receptive both physically and mentally to copulation. Only during estrus will copulation result in pregnancy. During proestrus and estrus, females may have a clear, blood tinged

Answer:

Females reach sexual maturity (puberty) between 8 and 18 months of age. There is a tremendous variability in the maturation age between breeds, and even within a breed of dog. 1. Proestrus, in which eggs in the ovaries begin to mature and estrogen levels begin to rise, is the first stage of the reproductive cycle.