I changed Dexter from Beta puppy food to Origin puppy food pretty soon after I first got him (he didn't seem to like the Beta much) and he has been on it for 2 weeks now. He was weighed at the vet's yesterday while having his last jab and had put on no weight at all. The vet says I must put him on another food but I'm really not sure which one. She suggested one that she sells but I want to do a bit more research first rather than try different types out on him. Any ideas? He is definitely a fussy eater and there are very few treats he likes too.