“When they come to us from the shelter, we say, ‘Today is the day that they start their new life,’” Zina Goodin, co-founder of Old Friends Senior Dog Sanctuary, told TODAY .

Odin the K9 police dog was hit by 200 porcupine quills (Image: Coos County Sheriff's Office)Heroic Odin was on the trail of a human suspect when he came face to backside with one nature’s most dangerous creatures.

Otitis externa is a chronic inflammation of the dog’s external ear canal. Otitis externa occurs when there’s a change in the normal environment of the ear canal that causes the lining of the glands to enlarge and produce excessive ear wax.