Yet the name gave the unexpected intruder a place in the family's memory.
It is easy to picture the jokes that might follow.
Did Oscar prefer the sofa to the floor? Was he planning to stay for dinner? Had he decided that Coco's home was now his own?
Of course, these are playful interpretations of the incident, not claims about the animal's intentions. Oscar was a wild seal behaving in an unfamiliar environment, not a human guest consciously attempting to take over a property.
Still, the humour comes naturally from the contrast.
Families spend considerable time and money furnishing their homes, choosing comfortable sofas, arranging their rooms, and creating welcoming spaces. Then a wild animal arrives without warning and appears to appreciate the furniture just as much as any human visitor might.
There is also the amusing question of how the family would explain the incident to someone who had not witnessed it.
Imagine telling a friend, "A seal came into our house today."
The friend might assume you were joking.
Then imagine adding, "It frightened our cat away and spent time sitting on the couch."
At that point, even a photograph might be required to make the story believable.
Oscar's brief visit demonstrated how wildlife can sometimes turn an ordinary domestic environment into an extraordinary scene. It also offered a reminder that wild animals do not always behave in ways that fit human expectations.
Sometimes, the most memorable wildlife stories happen not in remote forests or dramatic ocean settings, but in the most familiar places imaginable.
In this case, that place was a family's living room.
The Funniest Twist: The Family's Father Was a Marine Biologist
As if the story needed another surprising detail, the family's father was reportedly a marine biologist.
A marine biologist studies marine organisms and their environments. Depending on their specialisation, marine biologists may work with coastal ecosystems, marine mammals, fish, invertebrates, ocean habitats, conservation programmes, and other aspects of life in the sea.
In other words, the Ross family had someone at home whose professional background was closely connected to the kind of animal that had suddenly appeared in their house.
There was just one problem.
He happened to be away when Oscar broke in.
The timing could hardly have been more ironic.
Imagine being a marine biologist and returning home to discover that a wild seal has visited your living room while you were out. Your family has encountered an unexpected marine mammal on domestic territory, your cat has apparently evacuated the property, and the animal has already chosen a favourite resting place.
It would make an extraordinary addition to an ordinary workday.
Perhaps the father could have offered useful insight into seal behaviour once he learned what had happened. His professional experience may have made the encounter particularly interesting to him.
However, being a marine biologist does not automatically mean that someone is trained or equipped to handle every wild animal safely. Marine biology covers a broad range of subjects, and professional knowledge of wildlife is not the same as having the equipment or authorisation required for a rescue.
Calling the appropriate wildlife authorities remained a sensible response.
Nevertheless, the irony is irresistible.
A family with a marine biologist in it unexpectedly hosted a marine mammal, and the person most likely to have found the situation scientifically fascinating was not even home to witness the main event.
For the rest of the family, the experience was likely memorable enough without the professional connection.
For their father, it must have been an unusual story to hear after the fact.
Many people return home to hear about a neighbour's visit, a parcel delivery, or a minor household mishap.
The Ross family's news was considerably more unusual.
A seal had entered the house.
The cat had fled.
And Oscar had apparently discovered the sofa.
Two Hours Inside—and Almost No Damage
One of the most surprising aspects of Oscar's visit was that he reportedly spent around two hours exploring the house while causing almost no damage.
Anyone who has owned a curious young animal knows that exploration can sometimes come with consequences.
A puppy might chew a cushion. A cat might knock objects from a shelf. A dog might leave muddy paw prints across a clean floor.
A seal, however, is not a household pet, and its presence inside a home creates a different set of concerns.
Its size, weight, movement, and unfamiliarity with furniture could potentially result in overturned objects, damaged upholstery, or other problems. The animal could also injure itself if it became trapped or attempted to squeeze through an unsuitable opening.
In Oscar's case, the reported lack of significant damage made the story even more remarkable.
He apparently managed to move around the home, explore its rooms, and rest on the couch without leaving behind a major disaster.
That does not mean the encounter was entirely harmless or that seals are suitable indoor companions. The absence of substantial damage was simply a fortunate outcome of this particular incident.
The family still had to deal with an unexpected wild animal in their living space, and Coco had experienced enough alarm to leave the house.
There were also practical questions about hygiene, safety, and the animal's welfare. Wild animals can carry pathogens, and an indoor environment may expose them to hazards they would not encounter on a beach or in the sea.
Even a calm-looking animal can become stressed in an unfamiliar place.
For those reasons, the safest outcome was not to let Oscar remain in the house indefinitely. The priority was to arrange his removal without injuring him or placing the family at unnecessary risk.
Still, the fact that he reportedly caused so little damage makes the episode feel almost like a carefully staged comedy.
Oscar had the run of the house for a substantial period, yet the family did not return to find every cushion destroyed or every room in disarray.
His most significant act of household disruption may have been persuading Coco to leave.
And, judging by the story, that was more than enough to make him an unforgettable visitor.
Why Would a Fur Seal Wander So Far Inland?
Although Oscar's behaviour seems extraordinary from a human perspective, seals sometimes travel on land for entirely natural reasons.
New Zealand's coastal environment is home to New Zealand fur seals, also known by their Māori name, kekeno. These marine mammals spend much of their lives in the ocean but regularly come ashore to rest, moult, and engage in other important parts of their life cycle.
They are capable swimmers, but they are also able to move across rocky shorelines and beaches. Depending on the circumstances, a seal may travel beyond the immediate shoreline and appear in places where people do not expect to see one.