Luna and Odin playing

I try to let Luna and Odin out twice a day to just play with each other. They come up to the house and play on the porch where it is shady and cool. Odin starts out pretty white and by the end of the time his neck is wet and dirty. She is very easy with him but like I have said before he is just a stinker. He growls and grabs her fur and hangs on and she bites at his neck and paws him. I think they shall be good friends. Neither of them is food agressive, even when they get kitchen scraps. They both like to chase the chickens and lick the bottle as I feed the calf.