Dr. Karen Halligan
- Birthplace: San Diego, Ca
- Current Hometown: Los Angeles, Ca
- Series and Specials: Groomer Has It
- Areas of Expertise: Author "Doc Halligan's What Every Pet Owner Should Know" (Harper Collins, 2007), expert in animal cruelty, shelter animals/medicine, teaching CPR for pets and emergency techniques, preventative medicine and the health and well being of dogs and cats in general
- Non-Animal Expertise: Teaching protocols for shelters
- Family Status: I am single and have two children with fur: Kinky and Nathan my two cats
- Favorite Quote: "A journey of one thousand miles begins with a single step" - Lao Tzu
- Favorite Spots in the World: Barcelona, any where in Italy
- Favorite Spots in the U.S.: Santa Fe, New Mexico, Yosemite, Grand Canyon
- For Fun: Hiking, horseback riding, river rafting, yoga, running and reading