Billy and the Catnip

Usually when I come home, Billy wants my attention. But the other day, he was more interested in my stuff, and especially an envelope from my friend Sunshine. I thought perhaps Billy was smelling her cat and dog, but a second later I realized: Sunshine had sent Billy catnip. She has a plant of it and sent some of Lulu's secret stash.
If Billy could have been inside the envelope, he would have.

Do you see him licking the card?

Billy was trying to catch a bug, so he's really just in between positions here, but it looks like he's a kung fu master, doesn't it?
Billy is a little over a year old. He sure has come a long way from this scruffy little flea bag!