Joke Of The Day: Dog Sniffing

A man and his son were walking down the street. The boy saw a dog walking and sniffing at the ground.

What makes the dog sniff at the ground dad?

That is INSTINCT son.

A bit later his dad saw a dog sniffing another dog.

Do you know why he’s doing that son?

I do dad, like you said before that’s END-STINK.