No, don't take it away! It's too cute.
Hubby and I went shopping with Hot Rod a couple of days after we got him and hubby picked up a silly flat sherpa lamb. I thought was too big for him but hubby had picked so I went along. Hot Rod LUVS that lamb. He started laying on it and sucking the tail so I would put it in his crate with him. Then I would always make sure it was with him when we went out. It is his security blanket. Til this day, he's 13 mo, he still sucks on the tail as he goes nite nite on the sofa. It's so funny, he puts himself to sleep doing it.