Can you tell the age of a kangaroo by the size of its tail?

There is no direct correlation between the size of a kangaroo's tail and its age. While a kangaroo's tail can provide insight into its health and size, it is not an accurate indicator of its age.

However, the shape of a kangaroo's face and the condition of its teeth can be used to estimate its age. For example, a kangaroo with a short, rounded face and small teeth is likely to be less than one year old, while a kangaroo with a longer, more angular face and larger teeth is likely to be over three years old. This method of age estimation is not foolproof, but it is widely used by zoologists and wildlife researchers.