And Christie was spot-on with her assessment of Atlas — he took to the harness and leash immediately, and loved exploring the outside world.

"He was a natural … and thrilled to see the outdoors," Christie said. "When he's wearing the harness, he gets all pumped up and he wants to go. It's a very positive thing for him."

"On his leash adventures he gets to safely experience the beauty of Hawaii and the outdoors," Christie added. "He gets to walk the beach and climb trees."

At least two or three times each and every week, Christie takes Atlas for outside adventures at local parks. Christie didn't initially plan on taking Nell with them. Nell, however, had other ideas.

"The kitten was just really excited, and wouldn't stop meowing, so she really seemed like she wanted to come with us," Christie said. "I found a harness that was small enough to try it with her, and I brought her with us."

Christie initially kept Nell in a special backpack, thinking she'd feel more comfortable and secure in there. But Nell was having none of that.