Whats the difference between mouse and rat AND the difference between frog and toad?

really reall need help plz whats the differnece thanksWhats the difference between mouse and rat AND the difference between frog and toad?
Rat and Mouse-





rat, name applied to various stout-bodied rodents, usually having a pointed muzzle, long slender tail, and dexterous forepaws. It refers particularly to the two species of house rat, Rattus norvegicus, the brown, or Norway, rat and R. rattus, the black, roof, or Alexandrine, rat. Both species originated in Asia, but have spread throughout the world, mostly on board ships.





mouse, name applied to numerous species of small rodents, often having soft gray or brown fur, long hairless tails, and large ears. Any of numerous small rodents of the families Muridae and Cricetidae, The best known mouse species is the common house mouse (Mus musculus). It is found in nearly all countries and, as the laboratory mouse, serves as an important model organism in biology; it is also a popular pet. (Non-biologists often use the term ';mouse'; synonymously with ';Mus musculus';). The American white-footed mouse (Peromyscus leucopus) and the deer mouse (Peromyscus maniculatus) also sometimes live in houses. These species of mice live commensally with humans.





Frog and Toad-





Toads and frogs have many similarities, including the way they look. But there are some basic differences between them. For one thing, toads have dry, warty skin, while frogs have smooth, wet skin.








Both toads and frogs are amphibians, and belong to a class of vertebrate animals that includes salamanders. But they differ from salamanders because their bodies are short and lack tails.Whats the difference between mouse and rat AND the difference between frog and toad?
RAT MOUSE


1. They are larger in size 1. They are smaller than rats


2. Long tail consists of 210 scaly rings 2. The tail bears only scaly rings


3. They lack gall bladder 3. A gall bladder is present in them


4. They live upto 3-4 year 4. They live for about 2-3 years.


FROG TOAD





Habitat Aquatic Terrestrial


Biorhytm Diurnal Nocturnal


Skin Smooth, moist, sticky Rough, warty and dry


Teeth Only palatine (vomerine) and Totally absent


maxillary teeth


Tongue Bifid at its free end Nonbifid tongue


Vocal sacs In males only Absent totally


Vomerine teeth Present Absent


Lower jaw Triangular Circular


Bidder's organ It is absent but Bidder's Bidder's organ is there but


canal is present but canal is absent


Parotid glands Absent Poison glands near tympanum are the parotid glands


Eggs Laid in clusters Laid in strings


Omosternum It is present It is absent


Poison glands It has few poison glands It has abundant poison glands


Good luck Enjoy http://bisbio.in
Mice and rats are rodents. In general the smaller rodents are called mice. There are many different species of mice, e.g. the familiar house mouse is Mus musculus. It is actually an introduced species, not native to the USA, and so is the Norway Rat.





There are native mice found in the USA. Some of these include the deer mouse, harvest mouse, and pocket mouse.





There are also native ';rats'; found in the USA, e.g. the kangaroo rats, the muskrat and the woodrats.





And then there are rodents that are called neither rats or mice. Some are called gophers. Some are called lemmings, and some are called voles. Other rodents are the beavers, the porcupines, the squirrels, chipmunks, marmots and prairie dogs.





Frogs and toads are both anurans, or tailless amphibians. Strictly speaking frogs are anurans of the family Ranidae and toads refer to anurans in the family Bufonidae. However, there are many more families of anurans than just these two. So, the names frog and toad are used to refer to these other families. In general, a frog refers to a long-legged anuran with a slim waist, and the word toad generally applies to any anuran with short legs and a squat body. The Suriname toad (Pipa pipa), for example, is neither a bufonid nor a ranid, but it is called a toad because it has short legs and it has a squat body. The narrow mouthed toads are another example. They are called toads because they have short legs and squat bodies. The poison arrow frogs (families Dendrobatidae and Atelopodidae) are actually closely related to toads, but their bodies are slimmer and their legs longer than toads, so they are called frogs instead.





There are of course some exceptions. The Horned frogs, for example, are actually more closely related to toads than to ranid frogs, and they also have short legs and squat bodies. So, the terms frog and toad can be used to refer to practically any tailless amphibian of any family, depending or sometimes despite their appearance.
Ok firstly, rats and mice.


Rats and mice descended from a common ancestor anywhere from 8-41 million years ago - they have been evolving separately for some time and their resemblance comes as much from living in the same sorts of environments (convergent evolution) as it does from both being rodents. Most obviously, rats are generally at least twice as large as mice. Rats have a larger head in relation to overall body size, smaller ears, shorter, thicker tail and larger feet.


On a deeper level, rats have 22 pairs of chromosomes, mice only have 20. Rats develop more slowly than mice, have 6 pairs of nipples where mice only have 5 and suckle for longer.





Frogs and Toads are quite a different matter. The fact is, all toads are frogs. When people think of toads, they are probably thinking of what are known as the 'true toads' - members of the family Bufonidae, which contains more than 300 species.


Members of this family are distinguished by their stubby bodies with short hind legs (for walking instead of hopping), warty and dry skin (usually preferring dryer climates) and their paratoid (or poison) glands behind the eyes.


Toads tend to lay eggs in long chains. (There are some toads (genera Nectophrynoides), however, that are the only members of the frog family to bare live young).


The other frogs, often referred to as the 'true frogs' are identified by their bulging eyes, strong, long, webbed hind feet that are adapted for leaping and swimming, smooth or slimy skin (generally, frogs tend to like moister environments) and the fact that they tend to lay eggs in clusters.


True frogs must live near water. True toads, on the other hand, don't need to live near water.


They both however have similar life cycles and diets and both may be poisonous.





Hope this helps :)
They are all different species. What is the difference between a human and a chimpanzee. Same thing.


I'm not going to get involved in the mouse and rat. Most people have a problem with toads and frogs though. Frogs have moist wet skin and sucker toes. They can live in trees and watery places. Toad live only on the ground and have dry skin and cute little delicate hands without suckers. Frogs would be like turtles and toads would be like tortoises. I will check back. If no one else tackles the rat/mouse part I will dwell on that a bit for you.
They're different specie,another reason is that the mouse is smaller than the rat and the difference between a toad and a frog is that,the toad is usually dry while the frog is wet another reason is that the frog is much more beautiful than a toad.


*LOL*