Pit Bull Terrier
While Pit Bull Terriers aren’t aggressive by nature and wouldn’t start a fight, they would never back down from one, and they fight to the finish. For this reason, it’s not a good idea to let them run loose in dog parks. They aren’t a great fit for a family with children, mainly due to the fact that they need a lot of attention and care. In any case, no dog of any size or breed should ever be left with children unsupervised. This breed is definitely not a breed for everyone. Pit Bull Terriers are highly intelligent and need a lot of stimulation to keep them from getting bored.
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.