However, many mother dogs become better moms as they gain more experience (
multiparous females) even though one must consider that older mother dogs at times don't make the best parents either.
A high percentage of mammary adenocarcinomas (a large proportion of acinar - type) develop in
multiparous females.
Mice have a high incidence of Hodgkin's - like reticulum cell neoplasm at 18 months of age and pituitary tumors in old
multiparous females.
In the second part, they examined male offspring of
the multiparous females.