One of the main reasons humans and dogs have gotten along so well for centuries is that we just get each other. Dogs and humans can form incredibly close emotional bonds, and we also make great partners when working together, whether on a farm or in a K-9 unit. It’s no surprise that, according to Embark Veterinary, dogs and humans share an estimated 84% of our DNA and have over 17,000 similar genes.
Further, our species have evolved together. Dogs that were better able to communicate with humans—by understanding commands, making “puppy eyes,” and showing lower levels of aggression—were more likely to be bred, reinforcing those traits across the species.
A fantastic example of the bond between humans and dogs was recently shared by Emily Freireich, 24, on her 5-year-old dog Luna’s TikTok account. In the video, Freireich shows how Luna’s pupils dilate when she talks to her.
“Ignore my annoying baby talk, but I love seeing her eyes dilate when I talk to her. It makes me feel like she loves me so much,” she captioned the video. If you look closely, as Luna locks in with Freireich, her pupils (the black part of the eyes) grow larger.
“It makes me feel like she loves me and is listening to what I’m telling her,” Freireich told Newsweek. “She is the sweetest dog ever. She’s always happy to meet people and other dogs; she’s super cuddly and such a good girl.”
Why do dogs’ pupils dilate?
Dogs’ pupils get larger, or dilate, when they’re excited; that can mean they’re afraid or incredibly happy to see you. The pupils dilate to let in more light so they can see more clearly, whether that’s a threat or the person they love most in the world.
Dog owners should be aware, though: In some cases, pupil dilation may indicate that a dog is ill. If their pupils are dilated and they aren’t aroused for any reason, it may be time to make a vet appointment. But if you get home from work and they run to greet you and their pupils enlarge, it’s a sign they’re over the moon to see you.
Why do human beings’ pupils dilate?
According to Charlotte Eye Ear Nose & Throat Associates:
“When it’s dark, they widen to let in more light and help you see better. Conversely, your pupils will decrease in size and constrict when faced with additional light. Both of these occurrences allow you to adapt your vision for your environment. … When you’re attracted to someone or see something that appeals to you, your body – or more specifically your sympathetic nervous system – activates. Your brain increases production of the hormones oxytocin and dopamine, both of which can cause your pupils to dilate so you can better see the object of your desire. … Remember, attraction is hardly the only reason your pupils might dilate. Fear can also stimulate your sympathetic nervous system and release hormones so your eyes can temporarily improve its vision.”
Freireich’s video is a wonderful reminder of how much we love our dogs and how much they love us back. We live about five times longer than they do, and we should never forget that they may be only a chapter in our lives, but to them, we are the whole book. So, we should give them all the love, attention, and affection they deserve.
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