Photos: Columbus Zoo tweets pictures of animals joining in on O-H-I-O

With Ohio State in the inaugural College Football Playoff National Championship Game tonight, the O-H-I-O photos are aplenty.

Few, if any, will top the ones the Columbus Zoo (@ColumbusZoo) is tweeting out, though.

Employees of the zoo are taking photos with select animals, photobombing, serving are the "I."

So far, there's been a giraffe, koala and tiger getting in on the act. Oh, and not to be ignored, the zoo also put an Ohio State hat on a gorilla, which seemed to like it.

No. 4 Ohio State takes on No. 2 Oregon at 8:30 p.m. ET at AT&T Stadium in Arlington, Texas.

Check out the photos below.

The #ColumbusZoo giraffes are standing tall for the @OhioState #Buckeyes! O-H-I-O! #GoBucks #cbusproud pic.twitter.com/w9UyJiBFaT

— Columbus Zoo (@ColumbusZoo) January 12, 2015

A big O-H-I-O from our #koalas to The @OhioState #Buckeyes and punter, @Cam_Johnston! #GoBucks #cbusproud pic.twitter.com/WRZVcVknVi

— Columbus Zoo (@ColumbusZoo) January 12, 2015

We're all rooting for our @OhioState #Buckeyes! O-H-I-O! @zoos_aquariums @OregonZoo #GoBucks #cbusproud pic.twitter.com/RPdWqIpAok

— Columbus Zoo (@ColumbusZoo) January 12, 2015

#ColoGorilla is ready to cheer on her favorite team! @OhioStAthletics #GoBucks #cbusproud pic.twitter.com/91GyS8SjHd

— Columbus Zoo (@ColumbusZoo) January 12, 2015