Dogs do not cry tears when they are sad like humans do. Although dogs have tear ducts and produce tears, these tears primarily serve to lubricate and protect their eyes, not to express emotions. When dogs are sad or distressed, they show these feelings through vocalizations like whining, whimpering, and howling, as well as body language such as lowered ears, tucked tails, avoidance of eye contact, lethargy, and changes in behavior. Watery eyes or tears in dogs are usually due to physical issues like eye irritation or infections rather than emotional crying. However, some studies suggest dogs might produce tears in response to positive emotions, like being reunited with their owners, possibly linked to oxytocin, but this is different from crying due to sadness.

How Dogs Show Sadness

• Vocal signs include whining, whimpering, and soft barking.
• Body language cues include lowered ears, tucked tail, and avoiding eye contact.
• Behavior changes like loss of appetite, lethargy, isolation, or destructive behavior.

Why Dogs’ Eyes Water

• Tears primarily lubricate and protect eyes.
• Watery eyes can indicate allergies, irritation, or infections.
• Emotional tears like humans have are not typical in dogs.

Emotional Expression Differences

• Humans uniquely cry emotional tears.
• Dogs communicate emotions mainly through sounds and body language.
• Studies indicate possible tear increase from positive emotions, not sadness.

This understanding helps in recognizing when a dog is distressed and ensuring appropriate care and comfort for the pet.