Maternal aggression is most common in which group of dogs?

Maternal aggression is predominantly observed in female dogs that are nursing or raising puppies. This behavior is instinctual and rooted in the need to protect and care for vulnerable offspring from perceived threats. When a female dog is nurturing puppies, her protective instincts are heightened, causing her to be more aggressive toward others that might intrude or pose a risk to her young.

This behavior serves an evolutionary purpose, ensuring the survival of her litter by defending them against potential dangers. Unlike senior dogs, untrained dogs, or male dogs, the maternal instinct in nursing females drives a specific, heightened level of aggression aimed at safeguarding their puppies. Therefore, understanding the context and nature of maternal behavior is crucial when assessing aggression in dogs during this vital phase of their lives.