My grandfather used cane toads for pregnancy tests in Australia. https://www.australiangeographic.com.au/blogs/dr-karl-need-to-know/2018/06/how-aussie-scientist

My grandfather used cane toads for pregnancy tests in Australia. https://www.australiangeographic.com.au/blogs/dr-karl-need-to-know/2018/06/how-aussie-scientists-used-cane-toads-to-confirm-pregnancies/ https://www.australiangeographic.com.au/blogs/dr-karl-need-t...