My first posting in this blog. Thank you for Thess for letting me join this blog

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One of the TV channels that amuses me is Animal Planet. Maybe it sounds weird for you guys who live in America, but for me, an Indonesian animal lover, it's just too good to be true.
From the Animal Cops show, I just found out that when a dog is recovered from the injury, he will have a test which will improve whether he's suitable for an adoption or not. The dog will be given food, the tester will "approach" the dog by a hand-like stick. When the dog becomes agressive by that, he is not approved for adoption. I watched one dog that failed the test and had to be "killed" afterward. What do you think of this? Maybe it costs a fortune to run an animal nursery, but if an animal is not suitable for adoption, shouldn't they have been given a chance to live?