My poor dog had major spinal surgery last week and had to have the fur on his back shaved. He has beautiful thick fur so that’s been quite traumatic - not to mention the worry of him going through the operation... he’s started to perk up and is now behaving much more normally which is a relief. However I’ve just noticed that where his fur was shaved the skin is very dry and flaky. He usually has a beautifully shiny coat and I’ve never noticed any dandruff on him before so assume this is something to do with being shaved. Is there anything I can do to make it feel better? I don’t want him to start itching. He already has salmon oil on his food