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.
The Largest Animal Ever: The Blue Whale. The blue whale (Balaenoptera musculus) is a marine mammal belonging to the suborder of baleen whales. At 30 metres (98 ft) in length and 180 metric tons (200 short tons) or more in weight, it is the largest known animal to have ever existed.ggs laid by the Ostrich can weigh 1.4 kg (3 lb) and are the largest eggs in the world today. They can also run at maximum speeds of about 97.5 km/h (60.6 mph), making it both the fastest bird on land and the fastest two-legged animal in the world.