What is a mosquito eating when it isn't eating me?

It is only the female mosquito that drinks your blood, they need the protein to make all their eggs. Male mosquitoes and females the rest of the time just eat nectar. It is very hard to eradicate mosquitoes, because they are not very fussy about what kind of animal they drink from. However the Poison Arrow frog can fight back. It is extremely poisonous, and when the mosquitoes drink its blood, they rapidly die.