Most of us spiff ourselves up when we're looking for love.

But some males in the animal kingdom go a lot farther than a bit of extra grooming, drastically changing their physical appearance to catch the attention of females. Male hormones, such as testosterone, usually trigger these seasonal embellishments.

Massive antlers on moose and other deer are the most obvious and startling, but we wondered, how much of a makeover do more unsung males go through to snag a mate? 

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