four times the fun?

Echidnas are like hedgehogs if they were marsupials instead of… whatever hedgehogs are.

Reference: Johnston, S.D., Smith, B., Pyne, M., Stenzel, D. and Holt, W.V., 2007. One-sided ejaculation of echidna sperm bundles. The American Naturalist, 170(6), pp.E162-E164.

This is a series of little illustrated factoids about animal reproduction, posted daily. I’d love to hear your suggestions/ feedback. I also post these on my insta.

kinky

I am not clear on why the penises corkscrew in the first place tho. Maybe it helps them evert (inflate) faster?

References:

Brennan, P.L., Clark, C.J. and Prum, R.O., 2010. Explosive eversion and functional morphology of the duck penis supports sexual conflict in waterfowl genitalia. Proceedings of the Royal Society B: Biological Sciences, 277(1686), pp.1309-1314.

This is a series of little illustrated factoids about animal reproduction, posted daily. I’d love to hear your suggestions/ feedback. I also post these on my insta.

Putting the bone in boner

Not saying human copulation is short, but… there’s no bone in your boner, friend.

Reference: Austin, C.R., and Short, R.V. eds., 1986. Reproduction in Mammals. Cambridge University Press.

This is a series of little illustrated factoids about animal reproduction, posted daily. I’d love to hear your suggestions/ feedback. I also post these on my insta.

A little too stabby

These little slugs are TINY. Like just a few mm long.

The stylet also inserts something into the other slug that increases it’s fertility.

Reference: Anthes, N. and Michiels, N.K., 2007. Precopulatory stabbing, hypodermic injections and unilateral copulations in a hermaphroditic sea slug. Biology Letters, 3(2), pp.121-124.

This is a series of little illustrated factoids about animal reproduction, posted daily. I’d love to hear your suggestions/ feedback. I also post these on my insta.

scientific illustration + art

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