I think adult dogs love you as much, if not more because you've given them a second chance. It took Serene a while to warm up to us, but once she realized she wasn't going to be hit anymore, or abandonned, she became incredibly loving and loyal!
I rescued my great dane from a shelter.
Adults or puppies they will give you the same unconditional love.
However saying this it seems that the adult dogs are more aware of thier surroundings meaning that they realise you rescued them I don't know it just seems like they do.
There more grateful and affectionate and there so loving.
Well I know my baby is. It would be really good if you rescued a dog it saves thier lives and the life of another animal who can take the kennel of the dog you rescued.
SO RESCUE AWAY