It's a good thing that my hubby, Tim, has such a huge heart, or I would probably be in a pickle right now. You see, this year, he shares his birthday with Spay Day, which is this Tuesday, February 23. Lucky for you, that means a starry slideshow of PETA's brightest and boldest spay-and-neuter ads (versus mushy photos of Tim and me on vacation in Boulder).

Feeling inspired? Great! Tell us how you'll help animals on Spay Day.

Written by Karin Bennett

Maxim just released its "Hot 100" list, and apparently the editors understand the appeal of kindness toward animals. The list isn't just a "who's who" in hotness—it's a "who's who" in compassion too.

televiciando / CC

Number one on Maxim's list is Olivia Wilde, who always gets House fans' pulses racing. While she plays a naughty doctor, she still knows how to play nice with animals. You guessed it, Maxim's number one is vegan!

Chan Marshall, aka Cat Power, gets her audiences purring with her sultry voice and gorgeous looks, but we're happy as a kitty in catnip over the fact that she helped us promote spaying and neutering.

How much hotness can one woman dish up? Eva Mendes is the answer! Need more proof? Check out her sexy "I'd Rather Go Naked Than Wear Fur" ad. Eh, what'd I tell ya?

Stunning Charlize Theron is as compassionate as she is talented—just ask her dog.

Audrina Patridge's sunny smile could light up Las Vegas—but it's her heart (which has a gigantic soft spot for animals) that we're interested in.

Millions idolize blonde beauty (and Sexiest Vegetarian contest winner) Carrie Underwood, and we can't say we blame them.

Tricia Helfer's luminous looks and love for animals are otherworldly.

The evidence is in: There's no trace of a doubt that Roselyn Sanchez's steamy anti-fur ad is muy bonita.

The reason we're happy that ravishing Joanna Krupa graces magazines all over the newsstand? She refuses to compromise her values and never wears fur.

Written by Karin Bennett