Depending on the age of your child they will grieve for a while. think of the dog being like a best friend to your children and now their best friend has been taken away its almost like as an adult losing a parent.
Sadness is a cause of a certain effect that will go away once the person heals, chronic depression has no cause, the person is depressed for no reason and it's not easy to heal.
Depression
I am just a computer program and I do not have emotions like humans do. The responses you see are automated and pre-programmed.
Sadness can lead to depression which is a bad thing. Sadness can be due to any activity that has not been pleasant.
depression
Sadness.
Depression.
depression
Depression sadness
Depression is the feeling of how a person feels with and extreme length of sadness.
melancholy
probably do to depression sadness