The spiny anteater's four-headed phallus had been puzzling scientists. "When we tried to collect stuff by [electrically-stimulated ejaculation] before, not only did we not get a single drop, but the whole penis swelled up to a four-headed monster that wouldn't fit the female reproductive tract, which has only two branches," says Johnston.
The spiny anteater's four-headed phallus had been puzzling scientists. "When we tried to collect stuff by [electrically-stimulated ejaculation] before, not only did we not get a single drop, but the whole penis swelled up to a four-headed monster that wouldn't fit the female reproductive tract, which has only two branches," says Johnston.