Male and female lifespan
Male Pterinochilus murinus are generally expected to live around 3–4 years, while females can live 10–14 years. The difference becomes most obvious after maturity.
If you buy an Orange Baboon Tarantula as an older juvenile or adult, you may never know its exact age. Use the species range as a guide and keep your own dates from the point you acquire the spider.
Why females live longer
Female Pterinochilus murinus continue moulting after maturity, which allows them to remain healthy adult spiders for many years.
A male Orange Baboon Tarantula eventually reaches an ultimate moult. After that point his remaining lifespan is usually much shorter than that of an adult female.
Growth and maturity
Orange Baboon Tarantulas are fast growers. Young spiders normally moult more often than large juveniles and adults, but the time taken to mature varies between individuals.
Do not try to estimate the exact age of Pterinochilus murinus from size alone. Feeding, temperature, sex and genetics all influence growth.
Feeding and temperature
A practical temperature range for Pterinochilus murinus is 20–26°C. Stable care and sensible feeding are more useful than trying to force rapid growth.
Keeping an Orange Baboon Tarantula very heavily fed does not guarantee a longer life. Fresh water, suitable food, normal moults and stable enclosure conditions matter more.
Mature males
After the ultimate moult, a male Pterinochilus murinus may become more active around the enclosure and may eat less often than before maturity.
That change can be normal for a mature male Orange Baboon Tarantula. Keep water available, continue offering food occasionally and make sure the enclosure remains secure.
Keeping records
Record moult dates for Pterinochilus murinus and keep suitable exuviae if you want to confirm sex. If the spider was not bought as a tiny sling, record the date acquired and approximate size instead of guessing an exact age.
Over time, those notes make the lifespan of an Orange Baboon Tarantula easier to put into context and help show when growth and feeding patterns change.