The most common sounds of pleasure are moans and sighs, although dogs also use whines and growls to communicate happiness. Low-pitched moans are very common in puppies and are signs of contentment. Puppies moan when they are in close contact to their littermates, their mother, or their humans.

Why do dogs moan or cry?

Excitement, anxiety, frustration, pain, attention seeking, and resource solicitation are all common reasons dogs whine at their people. Most commonly, these sounds are aimed at conveying the desire for food, water, a potty break, a toy, attention, etc. ... And that's how canine “crying” can turn into a problem behavior.

Why do dogs moan when petted?

If you are petting your dog and he starts groaning, this shows that he is delighted and wants you to continue. This reaction is similar to what human beings experience during a massage when tension is leaving their muscles. Groaning after activity shows your dog is tired and is ready for some rest.