Cheers lads,I saw the cable in pets at home and it said safety cable won't knot. I have a small garden and I'm in the process of making a cabin and I thought rather than having a big run I could just use a chain on the cabin. I take him to work every day and when we are working in town he is tied up so he is used to it. When we work out in the stick he's loose next to me (loyal friend). He's only 5 months. I'll take some pics and put them up. Got some time of work now had our second baby today. ATB earlystart.