<img src=”https://naked-science.ru/wp-content/uploads/2025/03/bonded-bunnies.png” alt=”Scientists have restored erections in rabbits and pigs using 3D printing”/>An interdisciplinary team of scientists has built and printed a hydrogel penis model with cavernous bodies that can erect like a real organ. In addition, they were able to implant animal-modified prostheses into pigs and rabbits, completely restoring their erectile function. The animals were able to conceive offspring, and females were able to bear and give birth to cubs.