The Two-Dog Experiment: Pet Sitting Luna's Cousin Ollie

Posted on August 31, 2026

As Luna, our one-and-only household dog, continues to age, Dave and I sometimes wonder whether it’s time to get another dog. We could rescue a younger dog to learn from Luna how to be the best dog ever. Having a sibling to endlessly play with would keep her feeling youthful. Both dogs would end every day snuggled up, sharing a space, and snoring in synchronization. This new dog would learn the household routine and honor her legacy when the time comes. Rather than jumping into adopting a second dog, the perfect experiment arose when Dave’s sister needed a pet sitter. We eagerly volunteered our time and our house to care for a new guest, her 3-year-old family dog, Ollie.

Ollie arrived on a Monday with his own bed, a blanket, a leash, and a Ziplock bag of kibble. He also had allergy medication in case he showed signs of itching. We set up the dog crate and left the wire door wide open. Ollie was shy and sought comfort in the crate immediately, while Luna showed no signs of being bothered by his presence. Ollie seemed disoriented but ready to rest, politely curled up on his blanket in his new safe space. That evening, when we took out the trash, leaving the door slightly ajar, Ollie saw his chance and dashed right through the crack for freedom. Luna (who, again, is 10 years old) never goes far if she slips out, so there was no need to panic! “He couldn’t have gone too far,” we reassured each other as we ventured around the back of the house, expecting to find him frozen with fear and regret. Unfortunately, he wasn’t behind the house, in the house, around the house, or anywhere. He seemingly disappeared, just like that, on day one.

Realizing he was completely gone, the search began. I jogged through the neighborhood on foot, while Dave hopped in his SUV to cover more ground. We stayed in contact by phone, texting and calling each other with updates. We stopped every person we encountered, gave them a brief description of Ollie’s appearance, and admitted we had no real way of knowing where he had gone. Suddenly, I got a call from Dave saying he spotted Ollie right back at our front door. I began rushing home to see it for myself. Just as I neared our front yard, I received a SECOND call: “he ran again,” Dave informed me. After two more rounds of the same dance, Ollie finally surrendered to a Milk-Bone, allowing Dave to coax him back indoors. The fantasy of a fun, breezy transition to a double-doggy household instantly vanished.

Unfortunately, we lost almost all trust in Ollie having unsupervised access to any exit. When he wasn’t hiding in the dog crate, he was staring out the window longingly, planning his next escape. We upgraded him to his own AirTag, and fitted him into one of Luna’s heavy-duty harnesses should he ever go rogue again. We took him out a couple of times the next day, trying to establish a potty routine. When he didn’t seem to empty by the evening, I decided to take him on a long walk with Luna. Luna loves walking around the neighborhood even at her age. Both dogs were having a blast, and I was finally seeing Ollie loosen up. He trotted along, sampled some sniffs, and smiled the whole 2-mile trip (a pretty standard distance for Luna). That evening, when Ollie settled back into the crate, he began to favor one paw. He started licking it and hiding it. When I gently went to examine it, he yelped loudly. Being good with animals was always one of my top personality traits. I felt so defeated. We reasoned he might be having an allergic reaction (hence his allergy pills), or he may not be used to walking that far on the hard concrete. No more long neighborhood walks for that duo anytime soon.

As challenging as the first day was, over time, Ollie showed some basic signs of tolerating his new household. The two-dog dynamic really played some mind games on my routine-based golden girl, too. If I gave Ollie food (in one of Luna’s bowls), I had to keep an eye out for her devouring Ollie’s portion next. If Ollie needed correcting, Luna would assume she was also in trouble, frequently putting herself in bed, ears back, and tail between her legs. If Ollie barked out of fear, Luna barked out of solidarity, removing any chance of peace and quiet. Luna played happily with her toys, as any only child would. When she got the zoomies, she was CONVINCED Ollie would love to join her in some running and roughhousing. Ollie cowered as she romped around him, eventually yelping loudly when she made an attempt at tagging him into a game of chase. The game quickly ended on that sour note, leaving Luna disappointed and frustrated.

After a week and a half of dog-sitting Ollie while his real pet parents were away, Dave and I let out a collective (but guilty) sigh of relief when they finally came to pick him up. Luna let out her own sigh of relief, happily sprawling out to reclaim her family and the entire house for herself. The experiment gave us the answer (and reality check) we so desperately needed as we experienced the “dream” of a two-dog household first-hand. Balancing two dogs with two completely different personalities, needs, and worlds is much more challenging than we ever imagined. Luna also showed no willingness to cooperate or adjust her personality to accommodate a younger sibling. Just like that, our family returned to its usual slow, predictable routine, giving our golden girl all the treats, space, and solo attention she deserves.