What is the size of an echidna?

A fully grown short-beaked echidna varies in size from 35 to 53 cm. Males weigh about 6 kilograms, while females have a mass of around 4.5 kilograms.

Long-beaked echidnas are larger. Their body length may be from 60 - 100 cm in length, and they may weigh between 4.2 and 9.1 kg.