They look like the infant dummies we use for CPR training, which also have the “gash” where the head connects to the neck.
I think I’d take anything from “Videos Mundo Curioso” with a grain of salt before reposting for shock value. 
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You don't know it's veracity and you publish it anyway? Remembering a physician's testimony of having performed abortions, after a certain age, the fetus comes out in pieces. Those dolls are much bigger than anything in the testimony.
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Disgusting
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