Perhaps the hardest part of owning a pet is making difficult decisions when a beloved companion becomes seriously ill. That's why researchers are developing a new tool to help people assess their ailing pets' quality of life, a key factor in decisions about when to order life-prolonging procedures and when an animal's suffering means it's time to let go.![](http://feeds.feedburner.com/~r/sciencedaily/plants_animals/dogs/~4/Y_IJGleP3X8)
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14 de Junho de 2013
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