Largest and Smallest Animals At Risk of Becoming Extinct

Researchers have found out that the size of an animal is important when it comes to extinction. Scientists have determined that the biggest and the smallest animals are more at risk of dying out than medium-sized animals.

Heavy animals are mostly endangered by hunting and poaching while the smallest creatures may die out because their living area is being polluted. Among the most endangered animals are elephants, lions and rhinos. Public awareness is large  and campaigns to save such animals have been around for a long time. It is the smallest species that get the least attention. Especially fish and frogs are in danger of dying out.

The species that are most at risk have a weight of over 1 kilogram. They are in danger of being killed because we need food, skin and other items.

According to the study, animals that are becoming extinct affect large ecosystems, like  forests, deserts and oceans.


The common frog - an endangered species
The common frog – an endangered species – Image by Richard Bartz


  • according to = as said by …
  • affect = to change a situation or a place
  • attention = to listen, look at or think carefully about something
  • campaign = actions that lead to solving a special problem
  • determine = to find out the facts about something
  • ecosystem =all the animals and plants that live in a certain area and how they live together
  • extinction = when a plant or animal stops existing
  • least = less than anything else
  • poaching = to catch or shoot wild animals illegally
  • pollute = to make something dirty and unusable
  • public awareness = most people know that a problem exists
  • researcher = person who studies a subject in order to find out something new about it.
  • scientist = a person who is trained in science
  • skin = the outer part of a person or an animal’s body
  • size = how big something is
  • species = group of animals that are similar and can have babies with each other
  • weight = how heavy something is

Mission Cassini Coming To An End

After 20 years in space NASA’s Cassini mission is coming to an end in April. The {tooltip} spacecraft {end-text} an object that can fly through space and to other planets  {end-tooltip}  , which was {tooltip} launched{end-text} to start a journey {end-tooltip} in 1997 to {tooltip} explore {end-text} to find out more about something{end-tooltip}Saturn and its moons, is running out of {tooltip} fuel {end-text} energy that it uses to travel {end-tooltip}and will crash on Saturn’s {tooltip} surface {end-text} the top layer of a planet {end-tooltip}.

Cassini arrived at Saturn in 2004, after a 7-year long {tooltip} journey{end-text} trip {end-tooltip}. It carried the Huygens {tooltip} probe{end-text} a small unmanned spacecraft {end-tooltip}, which landed on Saturn’s moon Titan in 2005. In the last {tooltip} decade {end-text} ten years {end-tooltip}Cassini has been exploring  the planet and its moons. {tooltip} Recently {end-text} a short time ago {end-tooltip}, the spacecraft has {tooltip} revealed{end-text} to show {end-tooltip}that there are giant oceans under the frozen surfaces of some of Saturn’s moons. It also {tooltip} discovered  {end-text}  to find something for the first time {end-tooltip}the existence of {tooltip} hydrogen  {end-text} colorless gas; the lightest of all gases{end-tooltip}, one of the {tooltip} building blocks {end-text} an element that is needed to produce something {end-tooltip} of life.

In its last {tooltip} task {end-text} job {end-tooltip} before hitting Saturn’s surface , Cassini will pass through the space between the planet’s surface and its rings.  It will travel closer to Saturn than ever before. NASA {tooltip} scientists {end-text} a person who is trained in science and works in a lab {end-tooltip}expect Cassini to find out even more about the Saturn’s {tooltip} mysterious {end-text} strange and unusual {end-tooltip}rings than we already know.

NASA's Cassini probe in orbit around Saturn
NASA’s Cassini probe in orbit around Saturn