Hi, joined the forum because I'm having some problems with my 1 year old dog. I've had him since he was around 9 weeks old. My friend has his brother. They're both on the skinny side with long legs. The brother is a bit more muscular. He was always gaining weight steadily whereas mine has hovered around 15.4 kilos for over 4 months now. He is extremely active and seems healthy, but I think its odd that he hasnt gained any weight. I was feeding him kibble for the first 6 months. I went on vacation with him and my other dog for 3 weeks and he lost 2 kilos from stress (wouldnt eat) so I started to feed him wet food. He gained the 2 kilos back in a month or so but hasnt really gained any weight since even though I feed him as much as he wants. I even started him on raw food about a month and a half ago, supplemented with vitamins, just because he seems to prefer it. He never really liked the kibble and wasnt into the wet food too much either, but he really likes the raw meat, but still no weight gain. He's a mixed breed dog, possibly looks like border collie or dalmatian. My dogs brother is 19 kilos. My other dog is gaining weight because of the extra food. Also, gave him worm pills and didnt notice any worms in stool. Any ideas what this could be and if this is a problem?