Which animal has the largest horn-to-body ratio?

The animal with the largest horn-to-body ratio is the African eland (Taurotragus oryx), a large antelope found in eastern and southern Africa. The eland is known for its impressive spiral-shaped horns, which can grow up to four feet long and weigh up to 40 pounds. The eland's horns can be up to 60% of its body length, making it the animal with the largest horn-to-body ratio.

The eland's impressive horns are used for defense against predators and in competitions with other males for mating rights. The horns are also hollow and used for communication, amplifying the eland's vocalizations. While both male and female elands have horns, the male's horns are larger and more impressive.