My sister has two 3yr old bahounds,the girl one is of good weight& is all energy.Then the male dog is way too thin ribs hind legs bones sticking out has not much energy eyes look sad much more droopyer and becoming unable to get up and down as much,and believe it they both eat the same amounts and sometimes they get to eat two times a day also.The male was healther up until year ago then the weight just kept coming off and will not gain Nothing and the girl does?Please help us we are very worried and we have tried the deworming thing nothing changed?

What does the vet say?

You either let the dog suffer and die or take it to the vet. Has it been to the vet yet and if not, why not? We can't diagnose a sick animal online and to deny it treatment is abuse as far as I can see.