When can kittens go outside? Safe exploration for kittens

Wondering when to let your kitten explore outdoors? Our guide covers safe exploration tips, from preparing your home to gradual outdoor introductions.

Photo of a four month-old kitten exploring outdoors for the first time, accompanying an article on kitten safe exploration indoors and outdoors

Overview

Kittens can start exploring outdoors safely once they’re around four to six months old and have been vaccinated, neutered, and microchipped. Gradually introducing supervised outdoor time helps them build confidence and develop natural instincts while keeping them safe. Studies show that secure, controlled outdoor spaces are a great way to let kittens explore without the risks of roaming freely. This balanced approach helps keep your kitten safe from road traffic accidents, which cause over 60% of kitten deaths in the UK.

Preparing a safe indoor environment

Kitten exploration milestones

When can a kitten go outside?

First outdoor adventures

What to do if your cat doesn't come back

Letting cats out for the first time after moving

Creating a safe outdoor space for your kitten

Academic studies on kitten exploration

Rosalia, T.R., Syah, N.Y., & Ferasyi, T.R., 2021. A Study of Kitten Behaviours in The Urban Backyard. International Journal of Tropical Veterinary and Biomedical Research, 6(2), pp.7-14. Available at: https://www.jurnal.unsyiah.ac.id/IJTVBR

Taylor, A., Blackwell, E., & McDonald, J., 2025. Road traffic accidents leading cause of pet cat deaths in the UK, Bristol Cats study finds. Journal of Feline Medicine and Surgery. University of Bristol Veterinary School and Cats Protection.

Santos de Assis, L., Mills, D., & Ellis, S., 2021. The Cat’s Out of The Bag: Controlled Outdoor Space is Key to Happiness. Journal of Feline Behaviour and Welfare. University of Lincoln.

Foreman-Worsley, R., Finka, L.R., Ward, S.J., & Farnworth, M.J., 2021. Indoors or Outdoors? An International Exploration of Owner Demographics and Decision Making Associated with Lifestyle of Pet Cats. Animals, 11(2), pp.334-348. Available at: https://www.mdpi.com/journal/animals

Department for Environment, Food & Rural Affairs (DEFRA). (2023) Microchipping of Cats in England: Guidance. Available at: https://www.gov.uk/government/news/microchipping-to-become-mandatory-for-cats

International Cat Care. (n.d.) Kittens: indoor and outdoor safety. Available at: https://icatcare.org/advice/kittens-indoor-and-outdoor-safety

Medically reviewed by Lizzie Youens, BSc(Hons) BVSc MRCVS

Published on 15/05/2025 • Reviewed on 15/05/2025