This study focuses on three factors presumed to affect young children'
s development: their age, the quality of their home environments, and
the child-pet relationship. Three sets of analyses are presented: effe
cts associated with pet ownership (pet presence), effects associated w
ith the strength of the child-pet relationship, and the combined effec
ts of age, home environment, and the child-companion animal relationsh
ip. This study includes both a parent survey (n=88) and in-home assess
ments (n=44) of the three- to six-year-old children. The analyses supp
ort the hypothesis that normal preschool children's intellectual, moto
r, and social development is associated with the presence of a compani
on animal and increases with their age, the quality of their home envi
ronment, and their relationship with a companion animal. While the chi
ldren's age and the quality of their home environments were associated
with measures of the children's cognitive, motor, and social developm
ent, the companion animal effect was limited to the young children's s
ocial development including their empathy for other children.