I don't have a solid colour yarn so the kitty is a bit hard to see ... but it's there!
I used cotton yarn and size 4.5mm knitting needles. It's an easy pattern.
I cast on 43 stitches. The first four rows are garter stitch (knit each row).
The first four and last four stitches of each row are knitted.
You'll find the pattern for the cat here.
Knit four rows in garter stitch.
Cast off and bind in ends.