When taking my dog to get his nails done he pointed out the chinchillas to me (he loves the 2 I have). There was a beautiful female mosaic that I noticed was a bit skittish and appeared underweight. When talking to the owners (it's a local family, owned shop) they told me that the other chinchillas were keeping her from eating and even though she was now separated they were still working on getting her weight up. I decided to buy the pretty little lady to prevent that from happening again (my 2 aren't protective of their food and won't take food from the others). You can feel most of her bones and her spine is definitely pronounced. She is not very plump at all. I feed my chinies good quality pellets and alfalfa hay, but I'm concerned that I may need to give her a special diet to help put on weight. Do any of you have tips on putting on weight. In the 24 hrs I've had her she has been glued to the food bowl and hay rack. It's like she can't get enough food and my 2 chinies have been very welcoming to her and have been showing her around her new castle. I'm just worried she's going to lose more weight or not gain quickly enough.