Mine never wear a collar, i'd sooner be arrested than force my dogs to wear collars when running around through hedges etc.... That said though if i visit lurcher shows etc i'll put a collar on my dogs then with a 'tag saying read my chip'. but i don't run them with collars on..They have to wear a collar with a tag, by law in the ukIf it wasn't for my youngest whippet wearing his coat whilst out on a walk he would of been killed when he fell 30 foot down cliff... it happened in a brief moment, and in a place we regularly walk.I had to climb down and all I could get hold of was his tail... it was his coat that stopped him from getting hurt.. as it happens he came out without a scratch.
But you can say that about anything......
Collars, they could get them caught in something???