Kleptoparasitism is a term used to describe the behavior of animals that steal food from other animals. There are several synonyms for this term, including scrounging, pilfering, and foraging. Animals that engage in kleptoparasitism are often referred to as thieves, hijackers, or parasites. Other related terms include siblicide, where one sibling kills another for food, and brood parasitism, where a bird lays its eggs in another bird's nest. While kleptoparasitism is a common behavior in the animal kingdom, it is not always a well-received practice, as it can lead to competition and aggression among animals.