Happens to my Albert all the time. His nails seem to grow really fast and I can never stay ahead of the curve so he'll get stuck in the rug and things like that. What annoys me is if they're being bad boys and scratch the furniture and then get stuck. I help them out and I'm like, "You know if you used your scrtaching post for this, we wouldn't have this trouble." Thankfully they finally have discovered the post but my little devil Nash still likes to occasionally scratch other things he's no supposed to.