The term "unwanted animals" refers to creatures that are considered undesirable or unwelcome by humans. This can be due to various reasons such as overpopulation, aggression, damage caused to property or harm to human life, among others. These animals may have been abandoned, neglected, or deemed a nuisance and are often euthanized or put down. The phrase encompasses strays, feral cats, wildlife that has come into contact with humans, and other creatures that people do not want around them.