The animals are dying from the sheer number of bites, which leave them anemic and bleeding under the skin, as well as from the exhaustion caused by constantly moving to avoid the insects.
According to Dr Craig Fontenot, a vet in the city of Ville Platte, the "vicious little suckers", pushed out of marshes by the huge storm, have already claimed some 300-400 cattle, as well as a few horses. [...]
Hurricanes often present a risk of surging mosquito populations, as eggs laid by floodwater mosquitoes in previous floods start to hatch. While adult mosquitoes generally do not survive a hurricane's high winds, the egg-hatching phase that kicks in after a storm can drive a huge increase in the population.
Parts of Louisiana hit hard by Hurricane Laura have been left fighting off hordes of mosquitoes so vast they are killing farm animals by biting them in huge numbers.