dog Puppies and learning

The prenatal period is a recently recognized developmental period of puppies. It is thought that "long-term effects on behavioral development may also be produced in some mammals by events occurring in utero". (Serpell, 1995, p. 80) Previous studies tended to overlook the existence of this period, since the puppy’s behavior could not be observed. With the development of the ultrasound machine, a puppy can now be observed within the mother as early as the fourth week of gestation.

It was found that puppy fetuses would react to touch and/or pressure from the outside of the mother’s abdomen. In addition, it is theorized that since puppies have such a well-developed sense of touch at birth, the sense of touch would also be well-developed before birth. Studies have found that "when a pregnant animal is petted her litter is more docile", (Denenberg and Whimbey 1964, in Fox 1978) According to Fox, this facilitates relaxation, emotional attachment, and socialization. Other studies have indicated that puppies that receive outside contact (petting of the mother) while in utero have a higher tolerance for touching than puppies that receive no contact at all. One could theorize that gentle petting of the mother’s abdomen could help to facilitate positive, beneficial puppy socialization with people.

During the first two weeks of a puppy's life, also known as the neonate period, puppies can learn simple associations. (Serpell, 1995) However, early experience events are unlikely to carry over into later periods. Studies indicate that puppies in the neonate period do not seem to learn by experience. (Scott and Fuller, 1965) It is theorized that this is due to the fact that the puppy’s brain, sense, and motor organs are still undeveloped. Based on its limited capacity to sense and learn it would be difficult to affect the puppy psychologically, either in a positive or negative sense. (Scott and Fuller, 1965)

The next period of deve