Guinea-pigs used in experiments on the cutaneous irritation
at the laboratories of the Biosearch (USA).
Photo coming from the American association P.E.T.A. (Year: 1988)

After that the arteries have been cut in the groin
of the mouse,they will open its skull for experiments on ' headaches '.
Photo from: “Entering the Gates of Hell”, IAAPEA
Copyright Brian Gunn/IAAPEA. (Age: years '80)

This Rat's DNA has been modified so that its skin
is covered of wrinkles.It is used in order to test cosmetic anti-aging.
Photos from: COLORS n.19/1997(Age: presumablly years' 90)