First Catra is tied up with green vines around her body. Later they are only around her wrist. After her escape attempt, her entire body is once again wrapped in vines.
When Swift Wind mentions various other characters, horse versions of Bow, Glimmer, Catra and Shadow Weaver are shown, indicating that Swift Wind sees them all as horses. This contradicts Light Hope (2018), in which Swift Wind explained that he had started a revolution to free all regular horses from their stables, meaning that he can tell the difference between humans and horses.