Kristin Cavallari announced on Instagram this weekend that in addition to caring for her two toddler sons Camden and Jaxon, she will now protect and nurture one more helpless being—a puppy. It's a German Shepherd, from the looks of it.

Kristin captioned the above photo of her new charge, "Because 2 boys under the age of 3 weren't enough."

Best of luck to the whole family.

This has been 500 Days of Kristin.

[Photo via Getty]