[Ellie May]

You might want to wait a little bit longer. I won't get a spay done at that age because of the increased risk of spay incontinence.

There is an anesthesia sticky in the YT Library with questions that you could ask. I don't remember there being anything in there about intubation and sizing, but this is something your vet is more than qualified to take care of. As long as they are using isoflurane or sevoflurane for maintenance, I wouldn't worry about it. Yorkies vary so much in size, and even among animals of the same weight, there could still be variations in the appropriate tube size. Using the smallest one just because it's the smallest can be dangerous. The smallest one is fine IF that is what your dog's trachea requires. There is more risk to the dog when an owner insists on one size being used instead of letting the vet choose when they look at the dog and test a couple if needed. The vet can do it if you're more comfortable with that. Really up to each owner. However, techs here do tons of them (more than the vets it would appear) and so are really just as qualified if not moreso. Honestly, the same can be said about blood draws and such too. Some vets are great at them and others aren't. Their techs do that stuff for them all day, so IMO the techs tend to be just as qualified...