Dr. Geller makes her third appearance on the show to talk about what it means and what it takes to introduce two cats to each other, and how to keep the peace.

• Dr. Rachel Geller
• Impatient Dog Honks Horn While Owner in Store: ‘It Was Less Than 5 Minutes’
• Jack Russell terrier saves owner from bear attack thanks to ‘ninja moves’
• Help us keep pets and people together