Hi i was at a horse show and outside the gates were stalls 1 had sign Yorke male for sale 18 months old , i went for a look not really interested but in a box was this small smelly male yorkie with dry hair and a sorry look on his face ,as i picked him up i could feel every bone.

to cut a long sorry short i bought him out of feeling sorry for him, once i got him home i was him and noticed the tip of his tail was missing raw but not infected and a bit of the bone showing .i have being giving him multi-vitamin supplement and washed the wound daily with disinfectant.
My question to you is what could i give him to boost his recovery(although he perked up when he seen my 2 Dams) and put on weight soon rather than later.
Thanks in advance !