Modern crayons ARE non-toxic...

Check the label on a surviving crayon,
or the box they came in.
There should be some information on ingestion and what, if anything, to do.

Nice color - RED!

If you really want Smokey to unload it ~
Common household 3% Hydrogen Peroxide -
about a Tablespoon for a small Pup - should begin the unloading process -
in a very few minutes.
Stand back - it won't be pretty!