Dog mouth roofs have Jacobson's vomeronasal organ. They smell a dog's behind for gender, health, and emotion.
1 Mutual Bitching
Strangely, dogs consume grass. Some experts think dogs puke or chew grass like their wild forebears.
2 Eating Grass
Boredom, energy, or entertainment might cause tail-chasing. It may indicate compulsive ownership.
3 Following Their Tails
Due to their excellent sense of smell, dogs can roll in foul scents to sneak up on prey or evade predators. Experts believe dogs roll in foul-smelling things to communicate or mark territory.
4 Rolling Dirty Things
Food is generally hidden for later consumption. Dogs buried food to avoid scavengers or sparse prey. Despite inclination, domestic dogs don't need food.
5 Toy or Bone Burial
High pitches and sirens shout dogs. Wails from dogs can communicate. Sirens may cause this.
6 Howling at Sirens
Dog legs sleep twisted or flying. This tendency may be due to their adaptability. Resting positions help dogs maintain body temperature and stay attentive.