They can be dangerous my sister was killed because someone tried to a avoid missing a wallaby (small kangaroo) while driving and it was in a residential area not far from the city of Hobart.

It's much worse at night. I just got home before dark from my day trip to see Mum to avoid hitting any.
My LS1 has some damage from the previous owner hitting one.

 

Actually to re phrase, they were here first, so we are the ones that are dangerous.