Stop the cruelty in behaviour tests. Dogs aren't the danger humans are

Many thousands of dogs are being put through behaviour tests to decide wether they are going to be euthanised or not. The way the dogs are tested, be picked up by the scruff of the neck and being slammed to the room pinned down against the floor, repeatedly shouted out and abused, and people wonder why so many dogs are being euthanised, what dog wouldn't react the way to do when they are being treated inhumanly, why should we allow these people to treat dogs like this so they do lash out so they can put them down. No dog should loose their life over this, the dogs are trying to protect themselves from danger. Don't blame the dogs. Blame the people surrounded by the dogs. Dogs aren't the danger humans are.