Aversive conditioning can include using physical force against a dog or using pronged, shock, or choke collars. In videos on his YouTube channel, Deoliveira can be seen using leashes to suspend dogs by the neck, which critics say would likely cut off their source of oxygen

This is the kind of suggestion my grandma has for dog training. Shes 90 and should never be giving advice to anyone.

This is the best summary I could come up with:

Aversive conditioning can include using physical force against a dog or using pronged, shock, or choke collars.

In videos on his YouTube channel, Deoliveira can be seen using leashes to suspend dogs by the neck, which critics say would likely cut off their source of oxygen.

In a YouTube video earlier this year addressing some such critiques, Deoliveira pointed to dogs that he worked with behaving as proof of his success.

An online petition aimed at keeping Deoliveira from offering classes in Toronto has almost 2,000 signatures to date

But in general, positive reinforcement is the method most certified trainers, including the ones that work at THS, would choose first, McKee said.

In an email to CBC Toronto,  the Ministry of the Solicitor General, said Animal Welfare Services would review and respond to any complaints they receive, including any about Deoliveira.

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