World Dog Day: When it is celebrated and why

World Dog Day, observed on July 21, serves as an occasion to raise awareness about animal abandonment and advocate for responsible pet ownership and adoption. This celebration underscores the profound connection between humans and dogs, reinforcing their status as "man's best friend."

The deep bond between humans and dogs has evolved over at least 15,000 years, with some genetic estimates pushing this timeline further back to 20,000–30,000 years. This domestication was not a single event but a gradual process where certain wolves began living near human settlements. Over generations, these wolves differentiated, becoming more adapted to human presence.

Dogs became compatible with humans due to an evolutionary advantage: the selection of individuals who were less fearful and better at interpreting human cues. This sociability, rather than physical strength, was key to their integration. Canines that tolerated human proximity and cooperated were more likely to find food, reproduce, and pass on these traits.

This process is mirrored in experiments with domesticated foxes, where selecting for docility also led to changes in behavior and physiology associated with social living. In dogs, this evolutionary path fostered daily coexistence, characterized by reduced fear, increased attention to humans, and greater behavioral flexibility. Genetic studies also reveal adaptations, such as increased copies of genes for starch digestion, reflecting a diet associated with human food sources like grains and cooked food.