Scientists at Guelph’s University, Canada, have discovered a chemical process that may explain how cats and dogs were sickened and killed by melamine-contaminated pet food in March 2007.

Only when this mechanism is elucidated we can be 100% certain that melamine is indeed the cause. Though melamine has been proven toxic in rodent experiments, levels of this substance found in the dog food samples were very low (below what is considered toxic for rodents). This was quite puzzling and demanded for an explanation.

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Teaching a young puppy to come when called starts off perfectly. The puppy learns his name and that people use it when they want to give him something fabulous like dinner or a new toy, so he comes running. Well, he soon learns it is not a perfect world. He may hear his name called to come in from outdoors just when he is having fun or while enjoying a nap.

The biggest, the number one mistake people make with this command is to say Come!” when there is no possible way to enforce it. The puppy only has to disobey a few times when he hears “Come!” and you have taught him (and he has learned) that he has an option. He can come, or not.

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