Medical manikins, actually.
Manikins (mannequin, is usually used for department store dummies) are used for medical training.
There is a butload of different medical manikins to train people on, since the variation in people is so great.
They make manikins that represent geriatrics, children, the obese, various traumas, and for specific procedures.
Even for cats and dogs.
More of 'em.