Now that you raise the issue, neither spiders nor elephants are typically winged...
(
barryheadwound Mul-ti-pass? Multipass!,
Wed 1 Aug 2012, 13:27,
archived)
And goats don't typically give spider silkbut I think "typical" is a tiny dot in the rear-view mirror by now.
www.guardian.co.uk/science/2012/jan/14/synthetic-biology-spider-goat-genetics
(,
Wed 1 Aug 2012, 13:37,
archived)
www.guardian.co.uk/science/2012/jan/14/synthetic-biology-spider-goat-genetics