高考英语 考前突破阅读理解能力 文化教育 几种对宠物有害的人类食物素材.docVIP

几种对宠物有害的人类食物 A number of human foods are dangerous to pets. Many of these foods may seem tasty to our pets but can prove deadly if eaten. It can be very tempting to offer pets food from the table, but pets should not be given human food unless recommended by your veterinarian. 有些适合人类吃的食物对宠物是有害的。这些食物味道可口，但是宠物吃了以后可能会死亡。人类餐桌上有各种各样充满诱惑的食物，但是给宠物吃之前，最好询问一下兽医。 ? If you suspect your pet may have eaten a dangerous food, contact your veterinarian immediately. In many cases, early recognition and treatment are critical. ? Chocolate, Coffee, and Caffeine ? Chocolate contains theobromine（可可碱）, a chemical that is toxic to dogs in large enough quantities. Chocolate also contains caffeine, which is found in coffee, tea, and certain soft drinks. Different types of chocolate contain different amounts of theobromine and caffeine. For example, dark chocolate and baking chocolate contain more of these compounds than milk chocolate does, so a dog would need to eat more milk chocolate in order to become ill. However, even a few ounces of chocolate can be enough to cause illness in a small dog, so no amount or type of chocolate should be considered “safe” for a dog to eat. Chocolate toxicity can cause vomiting, diarrhea（腹泻）, rapid or irregular heart rate, restlessness, muscle tremors, and seizures. Death can occur within 24 hours of ingestion（摄取，咽下）. Grapes and Raisins ? Grapes and raisins can cause acute (sudden) kidney failure in cats and dogs. It is unknown what the toxic agent is in these fruits. However, clinical signs can occur within 24 hours of eating and include vomiting, diarrhea, and lethargy (tiredness). Other signs of illness relate to the eventual shutdown of kidney functioning. ? Garlic and Onions ? Garlic and onions contain chemicals that damage red blood cells in cats and dogs. Affected red blood cells can rupture or lose their ability to carry oxygen effectively. Cooking these foods does not reduce their potential toxicity. Fresh, cooked, and/or powdered garlic and/or oni