Why do dogs sniff each other’s butt?

They’ve been sniffing around in the neighborhood and now they need to know who was marking the territory. The dog that pees higher on the tree, the fire hydrant or the pole is the ‘top dog’.

I used to look after a dog that only had 1 rear leg, so he could tilt his hip and pee up, so no other dog could be on top of his pee.

That’s how dogs use the power of advertising!

2 dogs sniffing each other

2 dogs sniffing each other

Technical

Before (left) and after (right) as processed with Darktable 2.0.7

Before (left) and After (right)

Camera: Canon 7DMk2 ISO 2000 and 1/125
Lens: Canon 70-200mm f/4 @78mm and f/8
Processed with Darktable 2.0.7: http://www.darktable.org/