No, that's the reason why they chase their tails. ;)
Dogs sniff each others butts because it is their way of saying hello
Dogs Like/sniff other dog butts to get information about the dog. It is a form of communitcating.
When dogs sniff each others butts it's like when we shake hands. It's a greeting. (Don't go around sniffing people's butts.)
They sniff each others butts, like other dogs.
It's how they greet you. It's how they say hello. It doesn't work that well for people though.
It is only natural for other animals to sniff butts. There is no reason for a person to sniff a cat's butt because you cannot smell the pheromones that the other cats are sniffing for.
They act horny and sniff butts
To basicly say, Hey! Come meet me! Sniffing butt means Hello in Dog. One sniff tells Dogs everything about one another. :^)
they can learn more about them avoiding the bad smell
it is a way of saying hello if the other dog won't let the dog sniff him or her it is because he or she thinks of that dog as an intruder
most of the time they sniff each others butts like dogs, but sometimes they might chatter at each other wich is normal.
sniff their butts. And say your butt smells.