A dog in costume attends the carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. People dressed their pets up for the annual block parade held near Copacabana beach. (Photo by Leo Correa/AP Photo)





A dog in costume attends the carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





A dog in costume attends the carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





A dog in costume walks on a leash during the carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





A dog wears “The Flash” costume for a carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





Dogs wearing Olympics ring headbands ride in a stroller at a carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





A dog named Caique attends a carnival pet parade, wearing a feathered hat in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





A dog in costume attends a carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





A masked dog interacts with another dog at a carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





A dog wears a Wonder Woman costume during a carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





Pet owners hold their dogs which they dressed up in carnival costumes for a pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





Dogs in costume interact during a carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





A dog wearing a jester costume attends a carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





A dog in costume attends the carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





A dog in costume attends the carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)





A dog wears a bow tie during a carnival pet parade in Rio de Janeiro, Brazil, Sunday, January 31, 2016. (Photo by Leo Correa/AP Photo)