The simple act of petting an animal reduces stress. As you stroke the fur or hair of a pet, both your body and your pet’s release oxytocin. This hormone is linked to emotional bonding and is nicknamed “the love hormone.” Playing with a pet also raises your levels of dopamine and serotonin. Studies show that pet ownership can even help during stressful situations. One study showed that people with pets have lower blood pressure during stressful events than those who don’t.