What major behavior changes in dogs have occurred as a result of increased dependency on humans?

Animal companionship refers to the people owning animals. There are several reason why people decide to own animals, or pets.They give but also receive love and affection from their animals.
Because of these owners' interactions  and the increased dependency on humans  several behavior changes in dogs occured. The major behavior changes are:
Reduced predation and problem-solving abilities.
The reason is simple: Dogs get used to the attention, support and care of the humans, so as the time pasts they lose the ability to solve problems on their own.

Depression is lifelong, though you can get medication to with it. the difference between sadness and depression is that sadness lasts a little bit, depression last a long time and it goes on and off. people usually get depression through experiences they have been through, or genetics.