Elemental mercury toxicity (which usually occurs in the vaporized form) can cause: 1  mood swings, nervousness, irritability, and other emotional changes, 2  insomnia, 3  headache, 4  abnormal sensations, 5  muscle twitching, 6  tremors, 7  weakness, 8  muscle atrophy, and.9  decreased cognitive functions.lemental mercury toxicity (which usually occurs in the vaporized form) can cause: 1  mood swings, nervousness, irritability, and other emotional changes, 2  insomnia, 3  headache, 4  abnormal sensations, 5  muscle twitching, 6  tremors, 7  weakness, 8  muscle atrophy, and.
âFishers are pretty vicious,â said Michelle Johnson, the animal control officer in West Greenwich. The fisher belongs to the mustelid family, which includes weasels, otters and wolverines. It has the aggressive, carnivorous temperament of a wolverine and can climb trees like a marten. Like weasels, a fisher will kill multiple animals at a time in a confined space. Fishers are nocturnal and not easily spotted. Humans have been the fisherâs biggest enemy, as deforestation and trapping for its pelt helped push it toward extinction early in the 20th century.
In fact in addition to hunting fish orca are also known to hunt sharks, seals, sea lions, walruses, penguins, dolphins, porpoises and even large whales among other marine animals. The strong hunting methods and close-knit bonds between dolphin pods make these marine mammals one of the best hunters in the animal kingdom.