Lace-capped caterpillar (White-streaked Prominent moth) - Oligocentria lignicolor - munching out on an oak leaf in the front yard.
Another look at the same cat.
Freaky dog fennel flower? Diffle-wuzzie?
Look again. It's a Camouflaged Looper, the caterpillar of the Wavy-lined Emerald moth, Synchlora aerata. It sticks flower bits to its back as it munches on the flowers of a variety of plants. If you are having trouble seeing that it is indeed a cat, click on the picture to enlarge it. The larva's head is toward my fingernail.