Why are feral cats bad?

Answer 1

Feral cats, while not "bad", can become a nuisance if they are allowed to breed unchecked and can develop very large colonies. Feral cat colonies can be found in many countries, and are often found in urban areas as it is easier to find food there. While many feral cats are wary of humans and tend to keep their distance, there is a problem with never knowing what infections or viruses a cat may be carrying, such as rabies. This can also be a problem with other cats, also. Some virus can be spread to other non-vaccinated cats, whether feral or domestic pets.

However, some places have developed schemes which catches feral cats in order to neuter, vaccinate, and generally check the health of the cat. These keep the populations in check, and ensure that the cats are generally healthy and are unlikely to pass any illness onto another cat or person.

Answer 2

Feral cats can negatively impact local wildlife populations by hunting and killing small animals. They also contribute to the spread of diseases that can affect both wildlife and domestic pets. Additionally, feral cats can create nuisance issues in urban areas, such as noise, odor, and unsanitary conditions.