There is lots to “boo” this Halloween. Falling on a Saturday gives you every excuse to start early and stay out late. Here are just a few treats for you to trick out!

12 p.m. to 4 p.m. – Bohemia Realty Group, 2101 FDB between 113th and 114th streets, host their second annual Howl-O-Ween pet adopt-a-thon.

1 p.m. to 7 p.m. – Children’s Monster Ball at A Philip Randolph Square, St. Nicholas Avenue between 116th and 117th streets, for tricks and treats and Halloween children’s fun.

5 p.m. to 9:45 p.m. – Lolo’s Seafood Shack, 303 W 116th St., will be hosting a “Shellabration” with cooking class for kids, a costume contest and more.

6 p.m. to 11 p.m. – Harlem Shake, 100 West 124th St. at Lenox Avenue, is at it again this Halloween, hosting a spooky soiree featuring a live DJ, “Thriller” flash mob, fire dancer and themed eats like “Zombie Fingers” (hot dog fingers “bandaged” in bacon wrapping); “Bloody Eyeball Sangria” (classic red sangria spiked with blood orange juice and eyeball gummies); and “Graveyard Dirt and Witch Shakes” (crushed Oreos and gummy worms). Share your costume on Instagram to be considered for the “Best Mask” contest, hosted by Miss Harlem Shake 2015 Amanda Mobley. Ten percent of food and drink sales will be donated to Amanda’s charity, the Church of the Master Mentoring program.

9 p.m. to 4 a.m. – Harlem Tavern, 2153 FDB at 116th Street, celebrates Halloween under the big top. Prizes for best costume, giveaways and specials.

12 a.m. to 3 a.m. – Minton’s, 206 W. 118th St., hosts Jazz en Fete, a late night party. The $10 cover gets you specialty cocktails, bites, best costume prizes and live music by Benny Benack & Creole Swing Band.

12 a.m. to 4 a.m. – Babbalucci, 331 Lenox Ave., between 126th and 127th streets, host a “Through the Looking Glass” party featuring drink specials and late night appetizers.