Plenty of poets wrote them, but the most famous of all is John Milton's  Lycidas . Like all typical pastoral elegies, Milton mourns the loss of his best bud (who died in a shipwreck). But he also compares him to a shepherd and describes the ways in which nature mourns his loss, too.
The Banff longnose dace, a small minnow, was recently declared extinct. It failed to compete with the guppies, swordtails, sailfin mollies and other tropical fish that had been released in the warm marsh below the famous hot springs by tourists and national park officials.
Head lice can only affect humans - they cannot be passed on to animals or caught from them - cats, dogs and other non-human animals do not play a role in the spread of head lice. Data show that head lice can survive under water for several hours. However, they are unlikely to be spread by the water in a swimming pool.