"...As a rule cat-lovers have a stronger personality bias towards working alone, independent of the larger group."
"...all of us, or nearly all of us, have both feline and canine elements in our personality. We have moods when we want to be alone and thoughtful, and other times when we wish to be in the center of a crowded, noisy room."

Taken from a book written by a zoologist and published in 1986.