Log chain that is both a yes and no. Pits are VERY beefy strong dogs to begin with. Mine has never been on anything heaver than 1/4" braided line. Could he snap it? I'm positive he could.. But with a training collar on he wouldn't dare. It would choke him while gouging his neck to hamburger. Honestly a logging chain isn't much for large breed dogs in general. I've taken him on bike rides with me and have sat back and he still wanted to run so he pulled my 200lbs plus bike on his regular collar. People just underestimate Large breed dogs in general, or ignore what they were bred for and freak out when the dog acts out because of boredom and frustration. I do think everyone who has a large breed needs to work with their dogs. To chain one to a tree and leave it though? Criminal!!