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How Loving Animals Boost Serotonin and Dopamine
Interacting with a loving animal — such as petting a dog, holding a cat, or spending time with a therapy animal — can trigger measurable increases in serotonin and dopamine in the human brain, both of which are key “feel-good” neurotransmitters.

Serotonin is a monoamine neurotransmitter that regulates mood, sleep, appetite, and overall well-being. Positive interactions with animals have been shown to raise serotonin levels, which helps reduce anxiety, promote calmness, and improve a positive outlook biologyinsights.com. This effect is often part of a broader neurochemical response that also includes oxytocin (bonding hormone) and dopamine (reward system) iere.org+1.

Dopamine is associated with pleasure, reward, and motivation. When you engage with a loving animal, especially through physical contact like petting or mutual gaze, dopamine levels rise, contributing to feelings of satisfaction, happiness, and a desire to repeat the interaction iere.org+1.

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