It seems to me there are a couple of issues here. I don't think a shelter wants just any JoeBloe walking in one day to say "hey I'd like to help by walking your dogs". The shelter needs to know something about its volunteers though a criminal check might be a bit much. If someone has been volunteering at a shelter for some time so the staff knows them and now new policies are being put into effect, then the shelter should have some sort of informational meeting/handout for all its volunteers so they know what and why. And even when volunteers have been accepted, some mini-training should be included for handling dogs. Many shelter dogs have been abused so I wouldn't want a volunteer who grew up under the "old" system of training with spanking and collar yerking now handling a special needs dog. Actual certification for dog walkers - no - the government intrudes enough.
I've made a lot of trips around Sacramento. There are a lot of nice areas there. The climate is a lot more temperate than CT. Good luck in The Golden State!
They shall grow not old as we that are left grow old:
Age shall not weary them, nor the years condemn.
At the going down of the sun and in the morning
We will remember them."
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