Petnomy is a free, multilingual resource for people choosing and caring for a pet. Its searchable catalogue includes thousands of names for dogs, cats, rabbits, birds and other companions, with documented meanings and cultural or linguistic origins. Visitors can filter names by animal, gender, length, sound, style and origin, then explore themes such as nature, food, mythology, pop culture, space, music and places. Curated collections and practical naming advice help pet owners find a name that is distinctive, easy to call and suited to their animal.

Beyond names, Petnomy features profiles of hundreds of dog and cat breeds, covering traits such as temperament, size, coat, exercise and grooming needs. Its articles offer guidance on behaviour, training, feeding, grooming, health and everyday care, including topics such as cat conflict, urine marking and common dog behaviours. The site is available in seven languages, and its names, breed profiles and articles are free to read without an account.