Introducing two chins- is this aggressive or normal??

Hi everyone,
I've owned chinchillas for a year and a half now. I originally adopted a pair, but I unfortunately had to have one put down due to malocclusion in June. About 2 months ago, I adopted a new chin from someone who had to rehome her. They are both females.
Rory, the chin I had originally, is 3 years old. Boo, the chin I adopted recently, is 4-5. They have been living next to each other in separate cages since I got Boo. I tried one introduction by opening both cages, but Rory went right for Boo and grabbed a chunk of her fur, trying to bite her. I immediately separated them and they have been just neighbors ever since.
Now, when I let Rory out for playtime, she'll run over to Boo's cage and try to bite her nose whenever she sniffs her. I want to introduce them in their play area, "neutral territory", but I'm nervous Rory will go right after Boo again. They're so fast, I don't want Boo to get hurt! Is Rory being normally territorial, or is she just plain aggressive?? Opinions and advice is appreciated. I would be ok with them being just neighbors,but it is a big pain to have two separate out of cage playtimes for them.

Protein Powder?

My chin, Chloe was diagnosed with dental disease about 3+ months ago. She went in for her 3rd filing today. I've been trying really hard to get her to eat more hay to grind her teeth down and I do limit her pellets because she eats more hay that way. The vet said she has muscle wasting and needs a protein supplement. I'm guessing it's from the decrease in pellets as that's really her main source of protein. If that's the case then she may be deficient or in danger of being deficient in some other nutrients that she mainly gets from pellets. I will bump up her pellets (maybe mix in some mazuri or something), though I hope it doesn't decrease her hay consumption. Her weight is unchanged from the past year essentially.
My question is, does anyone have any experience with protein powder supplements? I don't know if I've heard of a chin on protein supplements. My gut says to just up her pellets and call it a day but obviously I am no expert and she is my first and only chin so I have no experience to compare it to.
Thanks!

Minneapolis MN 3 chins need new home

Hi, I have 3 male chinchillas each with their own cage. I am new to the area and am not able to have my chinchillas at my apartment. I do not want to part with them. I didn't know if there was anyone who can board them and if not then I would like someone to adopt, they don't have to stay together. Thanks

Did oxbow change thier pellets?

I've read that they changed packaging, but my chin seems really fussy about this last bag. I don't know if I'm imagining it, but the pellets seem smaller.

I've fed him Oxbow for years and I don't recall him ever exhibiting this behavior.

Very new and looking for advice.

Hello! I'm beruset and my wife and I just adopted two chinchillas that were in a University behavior study. I think they're about 3 years old, and they spent those first three years individually housed in small wire cages. Since we've adopted them less than a week ago, a lot has changed for them. They're currently still housed separately in larger cages than they're used to, but still not quite as big as they need. We're doing research daily to make sure we're handling this properly, but of course info from other owners would be very helpful, especially if any of you have experience with rehoming research animals.
My main concern is that they are both hiding all the time, and not eating much. Our dog is curious and goes up to their cages a lot, which I'm sure isn't helping. Any advice would be greatly appreciated, and thanks for reading! I love that communities like this exist :)

Pet Carrier Training

I wondered if anyone has any tips on training chins to go into their pet carriers on their own accord.

I realize chins generally only do what they want to, when they want to, and training them like one would a dog is very unlikely. But I wondered if there were some techniques that people have tried that have worked?

We've invested in 2 carrier cages from John Hopewell (really great travel cages for those of you in the UK - much better than anything you can find in pet stores...). We've been working with the chins, holding the pet carrier up to the cage, encouraging them to explore, rewarding them when they go in, and then gradually closing the door, having them stay in for a few minutes or so at a stretch to get them acclimated, and rewarding them upon 'going home'. We've also been leaving the carriers out and open at playtime so that they get used to hopping in and out when they feel like it. So they've definitely gotten more used to them and don't seem to think of them as a bad thing, although one is definitely calmer than the other about being in a more confined space.

However, the problem is really when we need them to go into the carriers during the day when they'd rather being dozing. They're generally willing to come explore in the evening/night, but during the day, there was really no budging them.

Any tips on encouraging them?

Sonoma County Vets?

Anyone know of a good vet in Sonoma County?

My chinchilla is having an ultrasound tomorrow ... open pyometra is suspected...
If she has to be spayed I want to be sure it's done well!

I do see on other posts that adobe animal hospital is really good, but it's kind of far for me to take her... ?
I live in Santa Rosa , CA - any other recommendations?
Thanks everyone !