"To His Horse" can be considered a work of Romanticism because it emphasizes emotions, fantasy, and nature. Like Byron, Shelley, and Keats, Heredia writes in the form of an ode. "To His Horse" is an ode to the speaker's horse that is full of admiration for its strength, beauty, and endurance. Lines like "Friend of my hours of melancholy gloom" suffuse the poem with deep feeling, and Heredia also highlights the love the narrator feels for his horse, as well as his fear of death. References to a plain and wind also highlight the setting of nature, an important Romanticist motif.