The anatomical and physiological features birds and mammals have in common are possessing a spinal cord and vertebral column, four-chambered hearts and warm-bloodedness. Birds and mammals also both generally invest a great deal of time and energy into raising their young, and are energetic and active consumers. Both birds and mammals have flying, fully terrestrial and amphibious members, although mammals have a wider range of lifestyles.Continue Reading
Birds and mammals are the two major groups of warm-blooded animals on Earth, although a few fish such as tuna also are capable of internally regulating their temperature. A few species of mammals, such as mole rats, have little ability to regulate their temperature, but they are the minority of mammal species. Both mammals and birds evolved from reptiles, although most scientists believe that birds evolved from dinosaurs, while mammals came from earlier reptiles.
For all that birds and mammals have in common, however, they are not closely related and have many differences. Mammals have well-developed teeth, while birds have no teeth at all, having evolved their lighter beaks to replace them. The red blood cells of birds have nuclei, while mammals have red blood cells with no nuclei. Mammals generally give birth to live young and feed them milk, while birds lay eggs and must feed their young food items directly.Learn more about Zoology
The largest group of two-legged animal are birds, but there are a number of bipedal mammals as well, including many primates, kangaroos, wallabies and kangaroo rats. Many dinosaurs were bipedal, and several lizards can become bipedal when sprinting, including the green basilisk lizard, which can actually sprint across water for short bursts, though their normal method of locomotion is quadrupedal.Full Answer >
Many species of birds, mammals, insects, amphibians and fish migrate. While the reason for migration often differs among species, some reasons for migration include avoiding extreme weather, mating and finding food.Full Answer >
A notochord can be found in the embryos of all chordates, the phylum which contains the subphyla of fish, mammals, reptiles, birds and amphibians. The notochord defines the primitive axis of the embryo, is a transient embryonic anatomy structure and is not usually found in adults.Full Answer >
Animals that prey upon snakes include birds and mammals like coyotes and wild boars. Mongooses are a natural enemy of snakes and are common household pets in countries like India where poisonous snakes exist in large numbers.Full Answer >