GENERAL KNOWLEDGE: Which country did Burke and wills explore?

Questions

A ---------- in the wild usually makes no more than 20 kills a year.?

A male baboon can kill a ----------?

A male ---------- that has been neutered is known as a "wether."?

A male kangaroo is called a boomer, and a female is called a ----------?

A male ---------- becomes fully feathered when he is three years old, but can mate earlier.?