Rats are various medium sized rodents. "True rats" are members of the genus Rattus‚ the most important of which to humans are the black rat‚ Rattus rattus‚ and the brown rat‚ R. norvegicus. Many members of other rodent genera and families are also called rats and share many characteristics with true rats. A rat has an average life span of 2-3 years[1]. Rats are distinguished from mice by their size; rats generally have bodies longer than 12 cm (5 in). Contents [hide] * 1 Species and description
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weren’t rats lurking in your walls? Rats create many problems in the world and I believe we should eliminate all rats. One reason rats need to be eliminated is they spread diseases. According to CDC (Centers for Disease Control) rats spread hemmoragic fever‚ Lassa fever‚ Leptospinosis‚ and many more. Having rats running around infected with possibly fatal diseases is far too dangerous. To emphasize the deadly effect rats have‚ we can look at the Black Plague‚ in which millions of people were killed
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food and herbs that was safe for human consumption. This practice has been well docu-mented in Indian and Chinese medicine. Powerful and Wealthy individuals in ancient times used domestic animals to test whether their food was poisoned or not. Animals were also sacrificed for meat and as a source of dietary supplement‚ a practice that exists to this day. Even now pig valves are used as a substitute for faulty human valves in heart surgeries. This process however will be discontinued as stem cell research
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five-week old albino Sprague Dawley® Outbred rats: (24 females) and (24 males) purchased from Taconic Biosciences‚ Inc. one month prior to the experiment. The rats were purchased one month prior so that they can be examined by a veterinarian to make sure they are healthy before the start of the experiment. Once the rats were deemed to be healthy they were then separated into their according groups in order to start the experiment. The female rats were separated into four groups‚ three experimental
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pg. 462-464 a) Draw a diagram of the rat when it is first cut opened and the internal organs are exposed. Identify and label the diaphragm‚ the stomach‚ the small intestine‚ the caecum‚ the heart‚ the left and right lung‚ the trachea and the esophagus. (Note: see Figure 22 on pg 470 for an example) b) What structure divides the thoracic and abdominal cavities? The Diaphragm divides the thoracic and abdominal cavities. c) What is the sex of your rat? Male. Part C Digestive System pg 467
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JETTY RATS Jetty Rats‚ by Phillip Gwynne‚ is a novel that explores the qualities of friendship. The text positions the reader to believe that friendship is a very important aspect in everyday lives and that it will be very helpful‚ but there will also be a lot of complex situations along the way. Friendships can grow between people of different genders‚ but love will become a factor. Secondly‚ friendships may grow between people who have close similarities but also differences. Thirdly‚ friendships
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Rat Dissection Prelab 1. Is your left like your right side? It should be similar to your right but there can be differences like if damage was done to one side or if one side was mutated and disfigured. 2. Name an animal that doesn’t have a left and right side. Snakes don’t have a left and right side but there is an interesting study about that which is that Adult snakes (16 of 20 snakes) preferred to coil in the clockwise direction. Many female snakes (15 of 20 snakes)‚ but few male
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Brad Picard Mrs. Brousseau English 12 3 January 2013 The Genre of Horror: The Rats in the Walls The Rats in the Walls by H.P. Lovecraft is a horror story that portrays the overall mindset of a man who is trying to restore Exham Priory and the reputation of his family and ancestors from centuries ago. Delapore is a wealthy man who wants to rebuild his family home‚ even against the several horrible stories told by local villagers and his friend Capt. Norrys. Once his restoration of
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Animal Experiments Abstract This paper talks about animal experiments and why it should be stopped. The reasons are that animals experiments are unethical‚ it’s bad science‚ & wasteful‚ even though most people believe that there is no other way for scientists to find cure without testing it on animals first‚ but I think it’s not true‚ and you’ll see as you continue reading this paper. Unethical Arguments over the ethical behavior on animal experiments has been in humans thoughts from
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RAT POW Problem Statement: I this POW we were assigned to find the population of the exponential growth of a rat population‚ residing on a perfect‚ utopian island after a year. Organisms will flourish prosperity on the Island and no deaths would occur. The journey began when merely 2 full-grown rats‚ the one original male and female‚ arrived on the island. Their offspring would be determined by the following: Every day from January 1st‚ the original mother would give birth to a liter of
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