Help! Why does my dog growl and some other dogs?

i know how you feel about your dog going ballistic with other dogs. it's very stressful and can drain patience even if you adore your pet. but it's not impossible to change them. i sometimes walk 3 of my dogs together and in our neighborhood there are lots of stray dogs (they're actually our neighbors' unleashed dogs) which makes it challenging to keep all 3 calm during walks. what helped me accomplish this is practicing everyday to calm myself first before i attend to them and not mind about the other dogs. maybe in your case you are in a hurry to get to work and your dog is feeling that energy from you and that you're unsure about bringing her to work with you. also, even before you get to your work place you may be envisioning your dog's behavior toward that specific other dog. so try calming yourself first and never think about what might happen with the dogs in the kennel. if you feel insecure then most probably your dog would try to be protective and attentive to every detail where you bring her. if you don't care about the dogs who growls at her then surely your dog wouldn't care as well. sometimes we people are the ones creating the mood for our dogs. you might already know these stuff from working in a vet hospital but this i tried and tested it myself with my own dogs, so i hope it would work for you. ^_^

Better to keep your dog away from the other one. Or else they its going to cause you a lot of trouble.

some dogs just dont get along. have you considered putting a muzzle on her until she gets to the kennel

I guess some dogs get into your dog nerves and nothing much u can do except avoid them to be together just like human being sometime your just growl at other people what your feel threathen and such , maybe your dog has pass bad experience from certain dogs and hence with the negative aggressive dog behavour towards certain other dogs.