➔ Bird

   |   3 minute read
Bird Birds are a group of warm-blooded vertebrates constituting the class Aves /ˈeɪviːz/, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the 5.5 cm (2.2 in) bee hummingbird to the 2.8 m (9 ft 2 in) ostrich. There are about ten thousand living species, more than half of which are passerine, or “perching” birds.
Read More >>

➔ Worm

   |   2 minute read
Worm From Wikipedia, the free encyclopedia Jump to navigationJump to search For other uses, see Worm (disambiguation). Lumbricus terrestris, an earthworm White tentacles of Eupolymnia crasscornis, a spaghetti worm Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and no eyes (not always). Worms vary in size from microscopic to over 1 metre (3.3 ft) in length for marine polychaete worms (bristle worms);[1] 6.
Read More >>

➔ Fish

   |   2 minute read
Fish Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Around 99% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with over 95% belonging to the teleost subgrouping. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period.
Read More >>