Why not? Animals are so much smarter than we think. I swear my dogs know when I’m sad. My malti-poo is not a very loving dog. She’s smart, but she’s bit of a loner. In the ten years I’ve had her, I’ve been truly, truly sad to the point of crying maybe three times. Each of those times that dog came over and licked my face and curled up next to me. She NEVER does that. Ever. They know.
My sis’ pug has seizures if she’s been really having a bout of stress and health issues. Seriously. He just picks up on when ‘mom’ is not well and it effects him too.
My dog has feelings too. I didn’t mean to say the chimps weren’t feeling something, only that didn’t see it in the picture. it was an intriguing picture tho.