How many years does a Rex‑breed rat live? - briefly
Rex rats normally live two to three years, and with optimal nutrition and health management some can reach four years.
How many years does a Rex‑breed rat live? - in detail
Rex rats typically reach adulthood within two to three months and can live between two and four years under optimal conditions. Several variables influence this range:
- Genetics – Purebred Rex lines tend to exhibit the same longevity as other fancy rats, but occasional hereditary defects may shorten life expectancy.
- Diet – A balanced diet of high‑quality laboratory rodent pellets supplemented with fresh vegetables, limited fruit, and occasional protein sources supports cardiovascular and renal health.
- Housing – Spacious cages with solid flooring, proper ventilation, and regular cleaning reduce stress and respiratory infections, both common mortality factors.
- Health care – Prompt veterinary attention for tumors, respiratory disease, or dental problems markedly extends survival. Routine health checks and vaccinations (where available) are advisable.
- Environmental stress – Exposure to extreme temperatures, loud noises, or frequent handling can compromise immune function, leading to earlier decline.
In practice, well‑cared Rex rats most often achieve the upper end of the two‑to‑four‑year span. Neglecting any of the above elements frequently results in lifespans closer to the lower limit.