Any grass seed will do IF it is not chemically treated. Most grass seed for lawns has fertilizers and sometimes pesticides. Most catgrass seeds are just blends of grass seeds- an agricultural supply store is your best value.
Looks like my neighbour's cat, Crowley. If he's not off skulking in the bushes, he's yeowling loudly off his deck because he hates being limited to the house.
Modern foundation pens with universal ink cartridges/refillable ones are pretty reliable. The only time one has leaked on me was when I dropped it and broke the pen in half. I had topen body fixed and it still works well.
10/10 loaf- purrfect form!