Is it normal for my cat to smell my dog's butt?

[bobsmith2002]

I have a 8 year old small male dog and a 4 year old female cat. Sometimes my cat likes to smell my dog's butt. Is this normal? Both pets have been neutered and spayed.

 

[nuthatched]

That's how animals work.

 

[FrostRanger]

Yep, cats smell each other's butts too to get information on each other, your cat was just doing the same gesture to your dog