Hi
I am really confused and in need of help . Some of you may remember about 4 and a half years ago I bought a second hand cocker spaniel off Loot called Coco , He came to us having already had 5 houses within his short 7 months of being born . obviously he had issues , he still does but nothing of the magnitude he had when he arrived :

Biting / humping / biting ( drawing blood ) snarling / growling / Coveting stuff all really very aggressive behaviour . >:(But hey after 4and a half years he has changed considerably , he's still anxious and doesn't like you leaving the house but so cuddly and loving its fantastic .
I have always wanted two dogs but due to Coco's strange qualities I have put this off till now. We found another little guy up for sale close to us to buy two days ago and we have him at the moment on trial as Coco has to like him and fit in

, he is 4 a black cocker spaniel and such a loving, needy dog . Great on recall but bad on the lead .
My dilemmas are as follows:-
1. coco has been the only dog for 4.5 years and just ignores us at the moment he won't look at us sleep with us come near us and I am really worried I have upset him he is off his food, doesn't play all his usual games with us nothing . He normally spends 3 hours playing but no not interested . When we take the two dogs for a walk they get on . Coco hasn't snarled or that at Ash ( new dog ) or bit him or any bad behaviour towards him he is just ignoring everyone . I feel awful , :-\I really hope I haven't upset him

I thought it would be good having a pal . I am scared I have got it wrong . Coco constantly humps Ash ( any ideas how we can stop this as Coco gets aggressive with us , not Ash )
2. Ash the new dog is a bit overweight is it easy to reduce their weight when they are 4 years old .He is a great dog such an affectionate strong dog . He was used as a working dog but believe me he has some mussels on him . He would make a great Rugby tackler .

He only eats dry food ( coco eats butchers choice / fresh chicken and liver and tins of tuna ) just need help on what I can do as I know being overweight for a dog is not healthy .

I'm taking Ash to the vets for a once over , but know he is going to say about his weight . Any help on any of these topics would be great
I also hope I have posted this on the correct forum .
Regards
Carol