Small Pets

Fancy Rat

Rattus norvegicus

An intelligent, interactive rodent that bonds with keepers  ·  Intermediate

Fancy Rat

AlexK100 · CC BY-SA 2.0 — Wikimedia Commons

Lifespan
2-3 years
Adult size
20-25 cm body, plus tail
Min. habitat
Tall multi-level wire cage, large; for 2+ rats
Social needs
Social; keep in same-sex pairs or groups
Diet
Balanced rat nuggets/mix plus fresh veg and protein
Time
Daily interaction and out-of-cage time
Cost
Medium

Overview

  • The fancy rat is an intelligent, sociable domesticated rodent often regarded as one of the more interactive small pets.
  • Rats can bond with their keepers, learn simple tasks and enjoy genuine interaction.
  • They are social and should not be kept alone, needing at least one same-sex companion.
  • Their main drawbacks are a short lifespan and a high rate of tumours and respiratory disease.

Housing

  • Provide a tall, multi-level wire cage with bars suitable for climbing, large enough for at least two rats, with bar spacing close enough to prevent escape.
  • Fill it with hammocks, ropes, platforms, hides and tunnels.
  • Use dust-free, low-ammonia bedding and avoid pine and cedar.
  • Daily out-of-cage time in a safe, supervised space is essential for exercise and bonding.
  • Keep the cage clean, well-ventilated and out of draughts and direct sun.

Diet

  • Feed a balanced commercial rat nugget or a well-formulated grain mix as the staple, supplemented with daily fresh vegetables, occasional fruit and small amounts of cooked protein.
  • Variety supports their omnivorous nature.
  • Provide constant fresh water from a bottle.
  • Limit fatty, sugary and salty human foods to prevent obesity.
  • Foraging toys and scatter feeding give useful mental stimulation for these intelligent animals.

Health

  • Rats are very prone to respiratory infections, particularly mycoplasma, so clean, dust-free, well-ventilated housing is crucial; watch for sneezing, porphyrin (red) staining and laboured breathing.
  • Mammary and pituitary tumours are common, especially in females.
  • Their short lifespan means health can decline quickly.
  • Neutering can reduce some tumours and hormonal aggression.
  • Find a rat-experienced exotics vet early, as prompt treatment greatly improves outcomes.

Temperament

  • Fancy rats are generally gentle and clever, often seeking out their owners, riding on shoulders and learning to respond to their names.
  • With regular handling they become interactive companions.
  • They are highly social and do best in same-sex groups, grooming and sleeping in a pile together.
  • A lone rat suffers, so keep two or more, introducing newcomers carefully to maintain a harmonious group.

A good fit for

  • Keepers wanting an interactive, trainable pet
  • Those able to provide daily handling
  • Owners committed to keeping groups
  • People prepared for a short lifespan

Common mistakes to avoid

  • Keeping a single rat alone
  • Respiratory disease from poor ventilation/bedding
  • Small cages with no climbing height
  • Ignoring lumps and breathing changes

More Small Pets guides