Keeping pet reptiles can be ethical as long as they are kept in conditions that meet their physical, behavioral, and psychological needs. It is important to provide them with proper housing, nutrition, mental stimulation, and access to veterinary care. Additionally, ensuring that the reptile was obtained through legal and ethical means, such as adoption from a reputable rescue organization or breeder, is crucial. Researching the specific needs of the reptile species in question and being a responsible and knowledgeable caretaker are key factors in determining the ethicality of keeping them as pets.