Maybe this is OT, maybe not.

My gardeb is in So.Calif coastal.

Saw my cat staring at something yesterday afternoon.

Turned out to be a PURE WHITE SNAKE, about +- 3 feet long,
lurking under a rose bush. About 1-1/2" thick.

I called Animal Control, but snake was gone by the time they arrived.

They seemed dismissive of my (and my cat's; he was meowing and running
around in circles like crazy) concern. "Oh, it's just a garden snake;
we see them all the time", etc. I asked whether I should block up the
cat door, but they said snakes wouldn't go in there. ???

I have been here [censored] years, and have seen other critters,
but nary a snake. Also have never heard of a PURE WHITE
snake!

I tried locating white snakes on the 'Net, but got only some rock
group.

Any input on this -- how to research that snake, whether
I should worry, and any similar experience in this area?

TIA

Persephone