1. Topic order rodentia
Presented by Islam jan buneri
Ayesha ayaz yousafzai
Ibrahim nakam
Presented to Dear sir zahir ahmad saib lecture zoology department
awkum (buner)
Reference www.islam jan buneri.slideshare.com

2. Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Superorder: Euarchontoglires
(unranked): Glires
Order: Rodentia
Suborders
Sciuromorpha
Castorimorpha
Myomorpha
Anomaluromorpha
Hystricomorpha

3. Introduction
 The mammals of Rodentia are called rodents’
 They are found in vast numbers on all continents other
than Antarctica.
Common rodents are mice, rats,squirrels, porcupines, beavers
and guinea pigs, etc.

4. feeding
 Rodents use their sharp incisors to gnaw wood, break into
food, and bite predators.
 Most rodents eat seeds or plants, cutting wood, Nearly all
rodents feed on plants, seeds in particular, but a number of
species eat insects .

5. Range of orders
 Rodents make up the largest order of mammals. With about
2,277 species of rodents,
 over 40% of mammalian species belong to the order.
 Their success is probably due to their small size, short
breeding cycle, and ability to gnaw and eat a wide variety of
foods.
 Rodents are found in vast numbers on all continents except
Antarctica, most islands, and in all habitats except oceans.
They are the only placental order.

6. Dentition
 All rodents have a single pair of upper and a single pair of
lower incisors, followed by a gap , and then one or more
molars or premolars,
 Their anterior and lateral surfaces are covered with enamel,
but the posterior surface is exposed dentine. Rodents
lack canines, and have a gap between their incisors and
premolars. Their incisors are highly versatile and can be used
for a range of functions, such as cutting wood, biting through
the skin of fruit, prey capture, or defense, depending on the
species. Nearly all rodents feed on plants, seeds in particular,
but a number of species eat insects .

7. Size
 Many rodents are small.
 The tiny African pygmy mouse, (Mus minutoides), can be as
small as 6 cm in length and 7 g in weight at maturity.
 The largest extant rodent, the capybara, (Hydrochoerus
hydrochaeris),usually weighs up to 65 kg with exceptional
specimens weighing up to 91 kg.

8. Use by humans
 Rodents are important in many ecosystems because they
reproduce rapidly, and can function as food sources for
predators.
 Mechanisms for seed dispersal.
 disease vectors.
 Humans use rodents as a source of fur.
 As pets.
 As model organisms in animal testing.
 For food