“It is possible that the dogs that show teary eyes during interaction with the ... the only animals that produced tears when they felt sad or happy. While many animals such as cats, horses ...

Large and droopy “puppy-dog eyes” did not just evolve in domesticated ... have similar muscle adaptations that allow them to pull sad-looking expressions. Previous research compared the ...

“Puppy dog eyes” may be cute but they’re also a super ... that it’s really not time for yet another chew stick treat. And yet, one sad look from them, and you’re putty in their hands.