TIME Science animal behavior Hey, Did I See You Petting Another Dog? Michael D. Lemonick @MLemonick July 23, 2014 SHARE Stefanie Timmermann—Vetta/Getty Images Who were you seeing last night? And do NOT lie to me. Man's best friend takes that BFF thing seriously. Pay too much attention to a dog other than your own and you'd better be prepared to explain yourself when you get home.