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Guanacos stand between 1.0 and 1.3 m (3 ft 3 in and 4 ft 3 in) at the shoulder, body length of 2.1 to 2.2 m (6 ft 11 in to 7 ft 3 in), [7] [8] [9] and weigh 90 to 140 kg (200 to 310 lb). [10] Their color varies very little (unlike the domestic llama ), ranging from a light brown to dark cinnamon and shading to white underneath.
Around the same time the aquatic, scorpion-like eurypterids became the largest ever arthropods, some as long as 2.5 m (8 ft 2 in). [ 100 ] The oldest known arachnid is the trigonotarbid Palaeotarbus jerami , from about 420 million years ago in the Silurian period. [ 101 ] [
a Beroe ovata, b unidentified cydippid, c "Tortugas red" cydippid, d Bathocyroe fosteri, e Mnemiopsis leidyi, and f Ocyropsis sp. [17]. Among animal phyla, the ctenophores are more complex than sponges, about as complex as cnidarians (jellyfish, sea anemones, etc.), and less complex than bilaterians (which include almost all other animals).
Animal body lengths range from 8.5 μm (0.00033 in) to 33.6 m (110 ft). They have complex ecologies and interactions with each other and their environments, forming intricate food webs . The scientific study of animals is known as zoology , and the study of animal behaviour is known as ethology .
The four extant species of hyena, clockwise from upper left: spotted hyena (Crocuta crocuta), brown hyena (Parahyaena brunnea), aardwolf (Proteles cristata), and striped hyena (Hyaena hyaena)
More shoppers came to Costco stores in the three months ending Nov. 24, just days ahead of Black Friday. The company saw sales up 7.5% over last year.
The fixed rate for a 15-year mortgage is 5.92%, up 8 basis points from last week's average 5.84%. These figures are lower than a year ago, when rates averaged 6.67% for a 30-year term and 5.95% ...
The hippopotamus (Hippopotamus amphibius) (/ ˌ h ɪ p ə ˈ p ɒ t ə m ə s /; pl.: hippopotamuses; often shortened to hippo (pl.: hippos), further qualified as the common hippopotamus, Nile hippopotamus, or river hippopotamus, is a large semiaquatic mammal native to sub-Saharan Africa.