Once we found an echidna that had dug itself a hole under a gate. It stayed for a while with just its spines coming out from the ground. My uncle wasn't happy because he couldn't drive through the gate anymore. We had to dig all around it, being very careful not to hurt it. Then my uncle took it gently to a new home.
Echidnas look scary but are very timid, and just roll into a ball if they see someone coming.
It is best not to try to pick them up, though, as the spines would hurt. I saw animals I had never seen before, like squirrels and chipmunks. They are very different from our animals, but just as amazing if you have never seen them before. I did smell a skunk once.