There are many reasons why so many of us choose to share our lives with a pet--it's the perfect antidote for loneliness, providing an endless supply of smiles and the certainty of unwavering companionship, and many of us have seen the way a pet can make a family feel whole.

Without fail, he always signed off on these letters with love and he always included Whiskey and Bess in the list of individuals sending this love my way. At the time it made me laugh, it made me embarrassed, but as soon as I softened, as soon as I matured back into his son, I came to appreciate what he was saying -- an endearing and magnanimous reminder of how family will always be the sum of its individual members, be they human or animal.

When the cure for insecurity and meaningful conversation is to slap a cell phone against your ear, hide within your iPod, or tap out a cryptic instant message, is it any wonder that we find comfort and solace in hairy, furry, and scaly companions?

And as for those high school students who tell me they would rather be a cat than an MD because they prefer to deal with animals and not to deal with people, I let them know they have it all wrong. Veterinarians get to work with animals. We get to work for people.