Canine First Aid Training
"We care about your dog"
My cowardly dog has a spiked collar as a joke (spikes pointing outward, not towards the throat!), but it actually helped her one time: a very mean (thankfully small) dog got loose and attacked her and tried to seriously chew out her throat, but the spikes didn't let him get a grip & we got away angry but unscathed. So they do have a practical purpose!