General Signs of Age:
* Teeth: A rat's teeth never stop growing, but they can show signs of wear and tear with age. Look for any discoloration, unevenness, or significant overgrowth.
* Coat: As rats age, their coat can become duller, thinner, and more prone to matting.
* Eyes: The eyes may cloud up or become less bright.
* Activity Level: Older rats may become less active and move slower.
* Weight: Rats can experience weight fluctuations as they age. It's important to keep an eye on this, as weight loss can be a sign of illness.
Life Stages:
* Baby: Rats are born blind and hairless. They open their eyes around 2 weeks and are weaned around 3 weeks.
* Juvenile: From about 4 weeks to 6 months, rats are still growing and maturing.
* Adult: From 6 months to 2 years, rats are considered adults.
* Senior: Rats over 2 years old are considered seniors.
Factors Affecting Lifespan:
* Breed: Some rat breeds are known to live longer than others.
* Diet: A healthy diet can help extend a rat's lifespan.
* Environment: A clean and stress-free environment can contribute to a longer life.
* Genetics: Some rats are simply predisposed to live longer than others.
Important Note: It's crucial to remember that these are just general guidelines. For a more accurate assessment, consult a veterinarian who can perform a physical exam and consider the rat's individual history and breed.