Question: how big do axolotls get?
Answer: Axolotls can grow on average to a length of 9 inches (20 centimeters), but some have grown to more than 12 inches (30 cm) long. In captivity, the salamanders live on average for 5 to 6 years, but some have lived for up to 17 years, according to the University of Liverpool's The Animal Ageing and Longevity Database.