This has been the trouble all along.
People with absolutely no experience of dogs buy them off gumtree cheap then get bored with it and sell it on.
The dog just gets passed around, is neglected and abused each owner the dog just gets worse.
Of nearly all of the stories of killings you find that the owners haven’t had the dog long or the dog has had multiple owners.
When staffies were the status dogs my friend got one for £20.
She was only 3, had 7 owners and at least 5 litters of puppies.
There will be a new status dog after the XL bully.
The government needs to crack down on breeders and selling dogs off sites like Facebook and gumtree.
I think unless you are a licensed breeder then all dogs should only be got from rescue centres.