Do nonhuman animals ever cry from sadness? Tears are useful for our eyes—as they are for many other animals. A lot of mammals, reptiles and birds have tear glands that secrete aqueous fluid.

While animals don't cry in the same emotional way humans do, many species are known to produce sounds or behaviors that can be interpreted as crying, often expressing distress, fear, or loneliness.

But these feelings-driven tears may not be a wholly human experience. Dogs can also cry happy tears, according to a study published today (August 22) in Current Biology. Although the animals’ eyes don ...

But animals don’t shed emotional tears when they cry. And for the first several weeks of their lives, neither do humans. Instead, similar to other animals, newborn babies produce a heartbreaking ...

Some animals, however, probably can. Bats, mice and moths could potentially live in a world filled with the sounds of plants, and previous work by the same team has found that plants respond to ...

Anyone who has ever noticed tears in their cat's eyes has probably wondered, Can cats cry? Read on to find out the answer. If you’re like most cat parents, you’d give almost anything to keep ...