 Salamanders use their tails in defence and some are prepared to jettison them to save their lives in a process known as autotomy . Certain species in the Plethodontidae have a weak zone at the base of the tail and use this strategy readily . The tail often continues to twitch after separation which may distract the attacker and allow the salamander to escape . Both tails and limbs can be regenerated . Adult frogs are unable to regrow limbs but tadpoles can do so . 
