The amount of venom a male platypus produces also increases during breeding season, so scientists believe it is used as a weapon against rival males. Interestingly, however, the venom doesn’t seem to ...
"We've discovered conflicting functions of GLP-1 in the platypus: in the gut as a regulator of blood glucose, and in venom to fend off other platypus males during breeding season. This tug of war ...