The average lifespan of a rat can vary depending on factors like species, genetics, and environmental conditions. In general:
1. **Wild Rats:** Wild rats, such as brown rats (Rattus norvegicus) and black rats (Rattus rattus), have relatively short lifespans due to predation, disease, and harsh living conditions. Wild rats typically live to be about 6 months to 2 years old.
2. **Pet Rats:** Domesticated pet rats, also known as fancy rats, tend to have longer lifespans. With proper care, including a good diet, clean living conditions, and regular veterinary care, pet rats can live to be 2 to 3 years old, and in some cases, they may reach 4 years or more.
It's important to provide pet rats with a safe and healthy environment to maximize their lifespan. Genetics can also play a role, as some rat lines may be more predisposed to certain health issues. Rats are social and intelligent animals, making them popular pets for those willing to provide the necessary care and attention.