Pets can delight, amuse, befuddle and confuse their owners with their quirky, amusing and often annoying behavior.

Fortunately, two new books may help pet owners decipher the strange and fascinating actions of their furry friends.

"Why Do Dogs Drink Out of the Toilet? 101 of the Most Perplexing Questions Answered About Canine Conundrums, Medical Mysteries & Befuddling Behaviors" (HCI Books, $12.95) takes an irreverent and informative look at the curious habits of canine companions. The book answers dozens of questions, including "Can dogs get sunburned?" (yes) and "Are some dogs on Botox?" (yes).

In this entertaining book, Marty Becker, DVM, the "Good Morning America" vet, and syndicated pet-care columnist Gina Spadafori give pet owners the skinny on things they may think about dogs but never dare to ask. (Yes, some are prescribed Viagra!)

With its mix of humor and practical information, this book makes a great gift for dog lovers and trivia enthusiasts.

If cats are your idea of a "purr-fect" pet, then you may prefer "Do Cats Always Land on Their Feet? 101 of the Most Perplexing Questions Answered About Feline Unfathomables, Medical Mysteries & Befuddling Behaviors" (HCI Books, $12.95).

This quirky compendium reveals the answers to questions such as "Do cats purr only when they are happy?" (no, cats also purr when injured, giving birth-even when they're dying) and "Can cats see in the dark?" (not really, although they can see more than people).

Also written by Becker and Spadafori, the book offers plenty of fascinating trivia, such as where the term "cat's pajamas" comes from and what exactly is in that hair ball your cat just coughed up.

Cat lovers may just curl up to this entertaining mix of laugh-out-loud humor and practical information.