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

Other days

stud

Stud Day
lash

Lash Day
frozen yogurt

Frozen Yogurt Day
law

Law Day
tell a fairytale

Tell A Fairytale Day
book

Book Day
youth

Youth Day
nail polish

Nail Polish Day
gum

Gum Day
hannah

Hannah Day