Ok, well I got two thoughts to share. First some background. 1. My dog saved my life from a rattlesnake about 8 years ago. 2. The same dog 2 years latter got bit on the nose by a rattlesnake. Based on that background here are my thoughts.
1. A dog should not be trained in an adverse way against snakes. Dogs have instincts and already are aware that its not a good thing to play with. My dog that saved me from a snake did so by putting herself in between me and the snake. If she was trained to avoid snakes etc...would she have done that?
2. Having a dog that was bit and envenomated by a eastern diamondback I know how scary it can be. From my personal experience though as long as you can reduce the swelling so they can breath they will be fine. Our vet said that they rarely if ever vaccinate and or give anti-venom to dogs. First it is costly and secondly he said many times it doesn't work. A dog that gets a full dose of venom (very rare) will most likely not make it anyhow and a dog that is weakened already either due to illness or genetics won't make it. His advice, keep your dog healthy, active, and in your sight.
Anyhow, not worth much I am sure but its my 2 cents.
I am not sure if I agree with the statement that dogs have a natural aversion to snakes. I've seen our bulldog go crazy at the sight of a lizard (similar looking to a snake). And I have a friend whose dog cannot stop trying to hunt snakes. Dog gets bite about twice a year but it just suffers minor swelling and a quick vet visit is all that is needed.
I'll still take Stella to rattler class because I want her to know for 100% certainty to avoid them. My aunts brother is a game and warden officer and he has a few places in ad that he highly recommends. They teach sight, sound, and smell of rattlers and even have real rattlers. The goal is that when they see one, they retreat and run back to you for direction.
I think I'll pass on the vaccine though.
And I agree with mike, I would rather be bite. Stella won't know understand what happened and I can remain more calm when it's myself that is hurt than when she is, sad but true, I'm worried about Stella than myself. Plus if I call someone I'm sure they will send help for me over sending help for my dog.
And mike I am In Cali. I live in Santee and often go hiking in mission trails. And thank you for the compliments on Stella, she is my pretty girl