My left shoulder and cat's food

 My left shoulder has problem since last month. My left arm does not fully rise. I can put the arm on my desk to use my PC but the only left arm does not rise more than that. I can't get a taxi on a road. I don't know what's wrong. But I don't care maybe my left arm wants to take a rest. 

I had been buying 1kg/ 1,000yen cat food (1g=1yen) for my cat. I bought different one yesterday. It is 3.15kg/ 5,500yen (1g= 1.7yen). He figure out the difference. He ate 3times of usual amount at once.  

There is a big selection in cat food brands. It is from 1g below 1yen to about 7yen. It is hard to choose the one. Why I did up grade was that Yokohama city gave me (all people) ￥5,000 as a gift. I changed it to Amazon gift card. I wanted see my cat is delighted! So, he delightedly eats a lot every time it is more than I expected.