Domestic shorthairs typically stop growing in height at around 12 months, but their overall growth in terms of body mass and muscle development can continue up to 24 months. Since domestic shorthairs are mixed-breed cats without formal breed standards, it’s also normal to find individuals who fall outside this range. Several factors influence the growth of a domestic shorthair cat, including genetics and nutrition. Additionally, overall health and well-being, including veterinary care and exercise, contribute to healthy growth.
Transitioning a kitten to adult food is generally recommended around 12 months of age, though this can vary slightly depending on the cat’s individual growth and development.