Dogs can smell many disaster and disease, In research we found that dogs have an incredible ability to recognize the smell of organic compound that helps to find disease.
Their urine can corrode metal
Dogs' sense of smell is 10,000 times stronger than human.
Dog's don't feel guilt .
Dog can see color they have better sight in comparison of human. A dog can hear 250 yards away that most people cannot hear beyond 25 yards.
[image source: http://www.rd.com/advice/pets/50-things-your-vet-wont-tell-you/]
Informative post.
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