I have 2 littermates both boys.They also share the same toys even if I have 2 of a kind they will play with the same one. When I give them treats they break them in half and share and then will break the 2nd one in half and share. They sleep cuddled up together and they cannot be seperated. I had to take 1 to the vet and left the other one at home. People could hear him howling from a block away
They love each other very much. They do fight but i believe its play fighting.