Silly lambs

Three times we have had to free lambs from things. Once from some barbed wire and twice today from some brambles - which are more vicious than the barbed wire.
Each time the thing has become tangled in their fleece so they could still move around but only so far. The one in the barbed wire made a right racket until we went down to see what the problem was, the other times it didn't make so much fuss so we are not sure how long it had been there. Not more than a couple of hours I think. It is hard to tell they are trapped until the rest of the flock moved off somewhere else.
We took the opportunity with one to flip it over on it's back (it struggled somewhat) and inspect it. No idea what to look for really, but it had a tick on it's bum that we removed. The other times the victim escaped as soon as it was free so we are not sure if it is the same lamb each time or not, there are two that look nearly identical although one is female and one male.