If his collar keep breaking you can use a choak chain as a collar without the choaking part Go to the hardware store & get something that looks like this,

BUT instead of that hing thing, get the one that screwes (so he cannot get it off). It should be where the nails are kept in the store.

Don't loop the choak chain, just put the chain around his neck & attach the thingy. He wont be able to break that Just make sure the choaker isn't too long or he can slip it off his head

For years I had a non choak chain on Max, only cause his collars were choaking him & causing him to barf. I didn't need that screw thing, as Max wasn't a puller & it was only for his tags. Then he developed a sore back & neck & I remove it & we was always naked hehe

After Buddy is fully trained you can put pretty collars on him