Sounds like fertilizer.
They roll in it for the same reason they'll roll on anything "smelly"... it's a hunting instinct. Dogs do that to mask or cover their own scent.
they roll in dirt
no dogs tongues do not roll
dogs mostly roll when wanted to be petted or wants to play.
Your fancy house fragrances like Febreeze and stuff don't appeal to dogs. A good dog scent is, like, DEAD SQUIRREL. Their natural instincts say "It's a slug! It's stinky and slimy! I think I'll roll on it!"
Dogs roll in/on things they think smell good. It's like perfume to them.
I think, (not sure) it's because they are itching their backs
i dont really think that they mean to roll in smelly things, i think they are trying to get rid of other smells
The current theory about why dogs will roll in smelly material comes from on their relationship to wolves and observation of wolf behavior. Wolves will often roll in decomposing carcasses or the feces of plant eating animals or herbivores. It is assumed that this masks their own scent and enables them to sneak up on their prey without detection. It may even fool members of the other species into accepting a wolf as one of their own. It is assumed that this instinct is what we are seeing in the behavior of domesticated dogs as well. Working and hunting dogs tend to roll in smelly stuff more often than other breeds and this is perhaps because they are more closely related to wolves.
Because they're dogs...
dogs rolling on decayed matter is just coincidental. due to thick fur dogs roll to either scratch their back or to cool themselves up.
Laissez les bons chiens roll.