Whether or not to put the dog down.
Your call on that, sir.
Personally, I would consider putting the dog down. It will likely end up someone else’s problem.
We once adopted a small dog (terrier mix) rescue that bit two adult male relatives, a cat, and would have likely bitten a child had we not stopped her. Went after my husband any time he came near me. We spent a ton on obedience training to no avail. The place we adopted from had a contract that if we had issues we return the pet so we did that but we told them she was risky and would bite. They ignored us and she bit people at her next home. She had to be put down eventually.
I love rescues but if there is a history of neglect, mistreatment, or breeds with a strong prey drive are very hard to break, I personally wouldn’t risk it.