No, those are absolutely harmless Brown Snakes(Storeria dekayi).

Actually, the snakes are the one's that need to be afraid of your cat. They are very small and easy prey for inquisitive cats.

Looks like the poor little guy had a "run-in" with something already.

~Doug
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"a snake in the grass is a GOOD thing"

my website -serpentinespecialties.webs.com