Today our second cat Nekoko became age four. We don't know what's her birthday actually because she was a stray cat. So my wife decided that June 1st is her birthday.
We celebrate cats’ birthday, and the day they came to our house, every year. At every anniversary we buy a cake for them.
Comparing to the past year, she has been getting used to us. She stopped peeing on the futon (hopefully!), and she sleeps in the futon even we are sleeping! I hope she allows us to hug this year.