Mammal Essays

animal due to its rare traits, behaviors and the fact it has evolved little. Platypus is a semi-aquatic mammal meaning it can live on land and water. It is one of the few venomous mammals. It has an unusual appearance, duck billed, beaver tailed, otter- like fur, and webbed feet. It has aggressive behavior and do not like being touched whatsoever. Platypi and Echidnas are the only two mammals in the world classed as monotremes which means they lay eggs. The traits of a platypus is extremely unique

Gas Exchange in Mammals A mammal is a warm-blooded animal and because of their ability to maintain the same body temperature in all climates they are able to be more active than other animals. They all have hair present on their body during some time of their life, and they have mammary glands from which the females produce milk from to nurse their babies. In mammals their gas exchange system, the lungs, is located inside their bodies to reduce water loss and prevent desiccation. Oxygen enters the

Swiss naturalist Conrad Gessner in 1551. When Conrad Gessner first discovered the tissue he described it as it was “neither fat, nor flesh – but something in between.” (Gessner K, 1551). There are two types of adipose tissue that are found in all mammals: • White adipose tissue (WAT) and • Brown adipose tissue (BAT). White fat tissue is the most well-known and all the more regularly known

divergence. 2. The approximate slope of the best-fit line for non-primate mammals in the figure is about 0.61. This slope represents that about every 0.61 million years one nucleotide difference emerges between the non-primates. The approximate slope of the best-fit line for primate mammals in the figure is about 1.3. By comparing these two slopes it can be seen that it has taken primates have diverged more slowly than other mammal groups.

have been a pattern of stranded, or beached, marine mammals. In the last decade alone, a dismaying sequence of marine mammal strandings have occurred in Greece, the Bahamas, Madeira, Viequez, the canary islands, the northwest coast of the U.S. and Hawaii (DR. Marsha Green, 2005). Of course, that data was collected ten years ago. Today, harmful sonar still

Mammals and reptiles have been on earth for millions of years. They are both the two largest animals. Both mammals and reptiles can live together in different habitats even though there are several differences between them. A major difference reptiles and mammals have is their reproduction. Mammals are viviparous, which means they give birth to living young. When a mammal gives birth, she uses her mammary glands to nourish her young with milk. Reptiles are oviparous, they lay eggs to

dissolve (in the fish and mammals) and then diffuse (in mammals, fish and insect) through a moist and thin, (thickness of a cell) semi-permeable membrane with a large surface area to volume ratio. Dissolved gases are transported by a circulatory system (in mammals and fish) to cells in the body. In insects, oxygen and carbon dioxide are transported directly to each individual cell. The gaseous exchange surfaces for each animal that we will be covering are the lungs (mammals), gills (fish) and tracheoles

deal and overcome with losing something, can make them weaker or stronger. In the two literary works, a wife and husband lose important elements in their marriage, needed to sustain their boned relationship. In the short story “Answers,” in “Half-Mammals of Dixie” by George Singleton and the poem “Conjoined,” by Judith Minty, a wife and husband lose trust, connection, and unity within their marriage, revealing that the breakdown of trust results in devastating loss. In Singleton’s story “Answers

In 2013 the controversy of marine mammal captivity was brought into a new light because of Blackfish, a CNN-produced documentary that took the United States by storm by showing a different side to the family-friendly park shows. No longer were killer whales viewed by all as cute stuffed animals to be played with and put on display, but as intelligent and sentient creatures who have been affected significantly by their continued imprisonment. The depth of their social relationships, behaviors, and

The ecology of sloths When people hear “sloth” they usually think of a lazy mammal that does barely anything and isn’t that interesting, but they are wrong. Sloths are very interesting, they have many interactions with lots of different organisms. Sloths are arboreal{tree dwelling} mammals that live in the rainforest canopies of central and south America. A sloth’s diet consists of plants, when they are ready to defecate they go to the forest floor dig a hole and go, this sends the nutrients back

Reptiles are cold-blooded, while mammals are warm-blooded. According to Lane "cold blooded animals can’t maintain its internal body temperature overnight "(life ascending, Nick lane, page 78) and any insulation provided (fur or blanket) to keep it warm fails since it cannot then absorb heat energy from the sun. It is safe to say that mammals can maintain its internal body temperature overnight. A reptile can generate energy (as ATP) extremely fast, which enables it run really quick for few moments

teeth. Some of the more important similarities were eating and hunting habits. Some instantly noticeable similarities in all three was the blow-holes, breathing oxygen, and all three being aquatic mammals. Plus, all three give birth to living young. Another similarity between the three aquatic mammals is their forms of communication. Dolphins, whales, and killer whales all use echolocation to find their food when visibility is no longer an option anymore. They also use echolocation to communicate

Zebras, Unhappy Marriages, and the Anna Karenina Principle Throughout history, there were fourteen large domesticated mammals that each had an impact on the areas in which they existed. These animals were divided into two types of groups that demonstrated their important livestock for people all around the world. The first category was for the major five large domesticated mammals. This included mostly of animals that could be found on a farm today. On the very top of the list is the sheep. Its wild

classified as a Proboscidean, which is the same group Elephants belong to (Sources #4 and #5). Scientists have studied the skull and lower dentition (teeth) of the Phosphatherium and have found similarities to Elephant teeth. According to the “New mammal from the Early Eocene of Morocco exemplifying unexpected early diversity of Proboscideans” article written by E. Gheerbrant , J. Sudre , H. Cappetta, M. Iarochène , M. Amaghzaz, B. Bouya, (source #5) it states that ,“The new Ouled Abdoun proboscidean

was first discovered by European scientist though that the animal was a hoax, and to this day the platypus is still an evolutionary puzzle waiting to be solved (Brian Hall.) The combination of characteristics of mammal and reptile is also thought to be the missing link to reptiles and mammals and many scientist are still in the search for more answers. The platypuses avian similarities are their bill shape and the webbed feet similar

Cretaceous period. This was a flourishing time for the dinosaur population. Carnivorous dinosaurs, as in the Tyrannosaurus rex and the Giganotosaurus, made their way into the picture. The Triceratops and many other species came into sight as well. Mammals had made their appearance as a thriving genus, and flowering plants were developing as well as exceedingly altering the

To further my research I decided to look into some of the comparisons between sea life in captivity and sea life in the wild. Cetaceans (marine mammals) can normally travel up to 100 miles each day, including hunting and socializing with other mammals or members of their pods. Meaning they keep close family ties and have good team work with each other. In captivity, cetaceans are housed in small enclosures/tanks. This means that they cannot swim in long straight lines or dive very deeply like they

life, the ocean, and its environment. I have learned that when being a marine biologist it takes lots of patience when observing your animals and also when doing test on marine mammals. In conclusion, Marine biology is an important part of all marine life.Marine biologist study and observe fish, dolphins, seals, and other mammals to help the people and also themselves to find new and efficient ways to help

However, the ethics and morality of this process is questioned by medical professionals and renowned scientists. Although essential to research labs, animal activists continue to fight for the removal of the so-called cruel testing. When in reality, mammals and other organisms should remain as our main subject because these creatures have provided us with extravagant breakthroughs in 21st century consumables and prescriptions. Living animals are used in testing to help put things like hygiene

Introduction – Mammals are the dominant large unique group of animals having a number of morphological and physiological characteristics. They evolved from a group of reptiles called the synapsids. These reptiles arose during the Pennsylvanian Period (310 to 275 million years ago). A branch of the synapsids called the therapsids appeared by the middle of the Permian Period (275 to 225 million years ago). It was over millions of years that some of these therapsids evolved unique mammalian features