beaver
The furry animals in hastily doing the zigzag action, they indirectly pocket the circle, his foot when duck foot plate, on the surface planing. It is picked up suitable size branches and small stones in he built their nests, its front feet like hands, in work flexibly.
This is the beaver, also called the beaver, is rodentia beaver family aquatic mammal. Its fur is very precious. Beaver body husky, ears small, round, short legs, hind feet long and webbed, tail flat, like a canoe paddle, scaly. Beaver body length 1.3 meters, including tail length 0.3 meters, weight more than 27 kg. Beaver have musk glands, secretion liquid of castoreum, can be made into spices. Beaver fur luster, dorsal brown to dark brown, waist side color is more shallow, lower for fine nap, it covered with a shield of kemp.
Beaver small and stocky, probably in the animal world the most intelligent builders. Don't ju, axes, knives, Beaver can bite a tree your hands around not come and trunk. It USES trees to build across the river dam, dam formed under pool is a good place to beaver home. Beaver how to do the hard work? Well, if you can look at beaver mouth inside, you will see a long and sharp premolars. So long and so the sharp teeth of course can bite the tree's trunk. Beaver front tooth not only sharp and strong - they will never wear off, because these teeth has been growing, like beaver life, they maintained a certain length.
Sometimes beaver unexpectedly can bite the tree, the tree fell in the water. But if can't do this, beaver seems to also don't worry. They dig a trench (water path), with their own teeth to the tree into the log, the log floating to the place where it is their DAMS.
Beaver as construction workers, and works very hard. Each beaver are to do. Beaver no time to rest, they all the time in made room! They hurried back to collect or out branches and stone, dig to the mud, and put his own house made strong and safety. The beaver dam with branches, rocks and mud build up. They are branches coated with mud, build up the dome's lair, internal is 1.8 meters tall. After winter soft mud frozen, hunt sex animals can't intrusion his den. The ice in the open has one or more tunnel portal. Beaver also often in the river or lake shore burrowed and r. Food usually includes tender bark and tree bud.
Bryophytes and soft broken bark cause water room warm and comfortable and dry - this is for raising beaver baby to build ideal dwellings.
If you see a beaver, you may be sure that other beaver in side. Because they are in the life, one or more family lives together of one hole. Their building is together, the life also together, safely stay together.
If the beaver mocked the enemy (wildcats and Wolf hounds beaver as food, and people kill them is to get them bright and clean soft fur), it will be like on the surface can do that, try our best to beat its tail. Pa! Beaver know that sound means trouble. They to water peg, into the water, to his house to go swimming.
Each beaver family usually includes a pair of spouses and two nest cubs. Pregnancy 4 months, each production 2-8 young, usually 4 foal.
河貍
這種毛茸茸的動物在急速地做著之字形動作，它們迂回地兜著圈子，把自己的后足當鴨腳板，在水面上滑行。它正撿起尺寸合適的枝條和小石子在為自己建造巢穴，它的前足就像雙手一樣，在靈活地工作。
這是河貍，也叫海貍，是嚙齒目河貍科水棲哺乳動物。它的皮毛很珍貴。河貍體壯實，耳朵小而圓，腿短，后足長而有蹼，尾巴扁平，就像一把獨木舟的槳，有鱗片。河貍體長可達1.3米，包括尾長0.3米，體重27公斤以上。河貍具有麝腺，分泌液狀的河貍香，可以制成香料。河貍的皮毛有光澤，背側棕黃到深褐色，腰側顏色比較淺，下層為細密的絨毛，上面覆有起保護作用的粗毛。
河貍小而壯實，很可能是動物世界中最聰明的建設者。不用踞、斧、刀；河貍就能夠咬斷一棵你的雙手環抱不過來的樹干。它利用樹來建造穿過河流的壩，壩下形成的水池是河貍安家的好地方。河貍怎樣做這些艱苦的工作呢？好吧，假如你能看看河貍嘴的內部，你就會看到很長很尖利的前齒。那么長而且那么尖利的牙齒當然能咬斷大樹樹干啦。河貍的前齒不僅尖利而且堅固――它們永遠不會磨損掉，因為這些牙齒一直在生長，就像河貍的生命一樣，它們保持著一定的長度。
有時河貍竟然能咬斷大樹，使樹倒在水中。不過假如做不到這一點，河貍看來也不煩惱。它們挖一條溝渠（水中小路），用自己的牙齒把樹變成原木，把這原木漂浮到正是它們筑壩的地方。
河貍如同建筑工人，工作起來很努力。每只河貍都有事干。河貍沒有休息時間，它們的時間全用在造房上！它們急匆匆地返回或外出搜集枝條和石頭，挖來爛泥，把自己的房子造得堅固而安全。河貍的壩用樹枝、石塊和軟泥筑成。它們在枝條上涂上軟泥，筑成圓頂的巢穴，內部高1.8米。入冬后軟泥凍結，獵食性動物無法侵入其巢穴。在冰面下開有一個或多個隧道入口。河貍也常在河岸或湖岸挖穴而居。食物通常包括嫩樹皮及樹芽。
用苔蘚植物和柔軟的碎樹皮造成的水上房間溫暖舒適而又干燥――這是為撫養河貍寶寶建造的理想住處。
假如你看見一只河貍，你可能會確信別的河貍就在旁邊。因為它們是聚居生活，一個或多個家族同居一穴。它們的建筑是在一起，生活也在一起，安全地在一起逗留。
假如河貍戲弄敵人（野貓和狼追獵河貍作為食物，而人們獵殺它們是想獲取它們柔軟光潔的毛皮），它就會像在水面上所能做到的那樣，盡力拍打自己的尾巴。啪！河貍知道聲音意味著麻煩。它們向水邊疾行，潛入水中，向自己的家游去。
每個河貍家族通常包括一對配偶及兩窩幼仔。妊娠期4個月，每次產2―8仔，通常是4仔。
beaver
beaver