Mood and Emotion

I believe that all animals have moods. Sy Montgomery writes “hormones and neurotransmitters, the chemicals associated with human desire, fear, love, joy, and sadness, are highly conserved across taxa… This means that whether you’re a person or a monkey, a bird or a turtle, an octopus or a clam, the physiological changes that accompany our deepest-felt emotions (moods) appear to be the same. Even a brainless scallop’s little heart beats faster when the mollusk is approached by a predator, just like yours or mine would do were we to be accosted by a mugger.”


One of the most common social behaviors is allogrooming (also known as mutual grooming). It is expressed by the lateral parallel body position of two horses that allows for nibbling along the back or withers of each horse. While this behavior can be considered grooming, it is also thought to facilitate pair-bonding and dominance structure between band mates