Sheep

Sheep, sharing physiological similarities with humans and susceptibility to similar diseases, are crucial in respiratory and fetal development research, contributing to medical breakthroughs like steroid injections and surfactant therapy for premature babies. Additionally, they've aided in developing artificial womb technology to address extreme prematurity.

Rabbit

Rabbits, instrumental in developing the rabies vaccine, paved the way for pets in households. Their anatomical and physiological resemblance to humans aids research in cancer, glaucoma, infections, diabetes, and emphysema.

Ferret

Ferrets, sharing anatomical and physiological traits with humans, are pivotal in research for various diseases like peptic ulcers, cystic fibrosis, and influenza, making them invaluable models in biomedical studies.

Guinea Pig

Guinea pigs, resembling humans in bacterial infection symptoms and immune response, have aided research for over 200 years, advancing treatments for lung, ear, eye, artery, stomach, intestine diseases, including tuberculosis.

Chinchilla

Chinchillas serve as vital models for auditory system research due to their physiological similarities to humans, aiding advancements in acoustic studies and offering insights into middle ear infections and other areas like respiratory infections and ototoxicity.