Our houseguest

We were walking into the house today with Ben leading the way. He stops, turns around and yells that there is a CRAB in the house. I think I must be hearing him wrong because how does a crab get into our house anyway. I asked him if it was like the crabs we see at the beach and he said yes. So I put on my "brave" hat and proceeded to look for said crab. We looked around for about 5 minutes and I couldn't see anything. Knowing that Ben doesn't just make things up I was a little nervous, but what can I do?

Fast forward 10 minutes and I hear some scratching on the other side of the house. I found this little guy making his way across the room. Again putting on my brave hat I grabbed a pencil and coaxed him outside. Ben wants a pet....maybe we should have kept him.