Dog Heat Cycle Calculator App. Enter the genotype of the sire and dam and the calculator will calculate the possible color combinations. Our other online 63 day perpetual whelping chart is here !
Females reach sexual maturity (puberty) between 8 and 18 months of age, there is tremendous variability in the maturation age between breeds, and even within a breed. Pups will get the eyelids by day 32. Consequently, there is not a reliable online resource for timing your bitch’s ovulation.