Here are the cat-themed holidays and observances for May.
All month: Go Fetch! national food drive for homeless animals
3rd-9th: National Pet Week
3rd-9th: Be Kind to Animals Week -- 2015 marks the centennial
3rd: Hug your Cat day (1st observance)
3rd: National specially-abled pets day
30th: Hug your Cat day (2nd observance)