Oops, it doesn't look like 'animal shelter day' is a national day..

Other days

blanket fort

Blanket Fort Day
aloxolt

Aloxolt Day
lash

Lash Day
comfy

Comfy Day
gum

Gum Day
artists

Artists Day
singles

Singles Day
tulip

Tulip Day
latina equal pay

Latina Equal Pay Day
tell a fairytale

Tell A Fairytale Day