NASA is estimated to have sent over 2200 animals into space including insects, pigs, monkeys, rats, rabbits and spiders, 2000 were sent on one mission STS-90 in 1998.
Spiders, lobsters and snails have blue blood due to the presence of hemocyanin which contains copper.
Male wolf spiders will engage in threesomes during mating season to increase their chances of escaping cannibalism.