How can you select a rat? - briefly
Select a rat by evaluating its species, health condition, weight, temperament, and pedigree to match the intended purpose. Use visual inspection and basic health checks (e.g., fur condition, eye clarity, activity level) to confirm suitability.
How can you select a rat? - in detail
When choosing a rat, begin with a health inspection. Look for clear eyes, clean fur, and an active demeanor; any discharge, hair loss, or lethargy indicates possible illness. Verify that the animal’s weight aligns with its age and breed standards—juveniles typically range from 150 g to 250 g, while adults reach 300 g to 500 g.
Assess temperament by observing reactions to handling. A rat that remains calm when gently lifted and explores its environment without excessive squeaking demonstrates suitability for companionship or research. Conversely, aggressive biting or constant hiding suggests a less appropriate candidate.
Confirm the breed or strain matches the intended purpose. Common pet varieties include fancy rats with distinct coat patterns, while laboratory strains such as Sprague‑Dawley or Wistar are selected for specific physiological traits. Documentation from the breeder should list lineage and any known genetic predispositions.
Evaluate the source. Reputable breeders provide vaccination records, health guarantees, and allow a quarantine period of at least seven days to monitor for latent conditions. Avoid animals obtained from unregulated markets, where disease transmission and poor genetic health are prevalent.
Finalize the selection with a brief quarantine and acclimation routine. Place the rat in a clean cage with bedding, food, and water. Monitor for signs of stress, appetite loss, or abnormal behavior over the first week. Only after confirming stable health and behavior should the rat be integrated into its permanent setting.