Having a best friend in life is one of the greatest bonds you could have. You've connected with someone that you've never been able to connect with anyone like before. Best friends are practically family and are usually treated as a sister or brother.
Dogs are no different, they too have best friends. Just like how our best friends help us get through bad days and help create the best memories in life -- these dog best friends do the same for each other.
They sleep together, they eat together, they play together, they live life together. The only difference between dog best friends and human best friends: they're way cuter.