They are both children but at different ages.
A dog is comperable to a child under 5. They need a lot, they are generally happy, gregarious and companionable.
Cats are teen agers. Moody, independent and self centered.
"...Cats are teen agers. Moody, independent and self centered."
Unless you happen to get a Calvin. His aloofness is beyond teen-age...
LOL!!