Effect of mother on the development of a
โ
Dr. V. Flandera; V. Novรกkovรก
๐
Article
๐
1975
๐
John Wiley and Sons
๐
English
โ 330 KB
๐ 2 views
## Abstract Young rats 23 days of age (Wistar strain) that are offspring of aggressive parents will attack mice. They kill them, however, only if the mother has already killed mice in their presence. Rats 30 days of age will kill mice spontaneously without any previous exposure to killing. The occu