Cocker Spaniel
You might be surprised about this, but Coker Spaniels are not good to have in a house with children. The reason for that is they have what is called “rage syndrome”. Dogs with range syndrome will violently lash out at someone or something for no real reason. As it turns out, no matter how much training they go through won’t help this syndrome.
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Rhodesian Ridgeback
The Rhodesian Ridgeback is known to be able to keep lions away from prey while hunters chase them. They originate in South Africa and are only semi-domesticated. While they’re loyal and intelligent, they are very aloof to strangers. Not to mention, they need a large amount of training since they can develop an aggressive side when they aren’t taken care of and socialized properly.