[Veterinarian Warning] That Screen Door Might Actually Be Dangerous? 3 Fall Prevention Measures to Protect Cats in High-Rise Apartments
[Veterinarian Warning] That Screen Door Might Actually Be Dangerous? 3 Fall Prevention Measures to Protect Cats in High-Rise Apartments
Date: June 2, 2026 | Author: Chikao Muratani (Veterinarian, Director of Anima Animal Hospital)

高層マンションの窓際で外を見つめる猫のシルエット
The spectacular view from a high-rise apartment is wonderful, and seeing your beloved cat relaxing by the window is incredibly soothing. However, are you letting your guard down by thinking, “My windows have screen doors, so it’s fine,” or “It’s on a high floor so no bugs will come in, meaning it’s safe”? In reality, this assumption could directly lead to a major accident threatening your cat’s life.
In my daily practice, I have met many owners who shed tears of regret, saying, “I never thought they would break through the screen door…” or “I can’t believe they went out to the balcony through such a small gap…”. In this article, to prevent these tragic accidents, I will explain the dangerous risks unique to high-rise apartments and introduce three strictly selected fall and escape prevention measures from a veterinarian’s perspective.
■ The Terror of “Flying Cat Syndrome” Warned by Veterinarians

猫のおもちゃを捕まえる猫
Why do they fall from high floors? Do not overconfidence your cat’s athletic ability.
It is a huge misconception that “cats have good reflexes, so they don’t fall from balconies or windows.” In veterinary medicine, this is known as “High-Rise Syndrome” (or Flying Cat Syndrome), and fall accidents from the upper floors of apartments actually occur continuously. Cats are like master acrobats, but once their hunting instinct is triggered by a bird or bug, they lose all attention to their footing and may jump out into the void as if there were an invisible floor.
■ Is “No Screen Door” Normal? Ventilation Risks Unique to High-Rise Apartments

網戸のないスタイリッシュな大きな窓から風が入り、カーテンが揺れる様子
High floors of tower apartments have a unique window environment. The biggest trap is that many windows “do not have screen doors installed in the first place.” Opening these windows for ventilation is exactly like leaving a path open for a dive outside.
Furthermore, attaching a temporary commercial screen with Velcro is extremely dangerous. These temporary screens cannot withstand a cat’s sharp claws or the impact of their weight, and will easily detach if a cat leans against them.
■ Start Today! 3 Fall Prevention Measures to Protect High-Rise Cats

ウインドウロック
- Measure 1: Install an “escape prevention fence” to physically guard from the inside.
Setting up a sturdy tension-type fence creates an absolute barrier, keeping the cat away from the window itself. - Measure 2: Strictly use a “sash auxiliary lock (stopper)” to limit the ventilation width.
This allows you to firmly fix the window at a width that a cat’s head cannot pass through (generally 3-4 cm or less). This small item becomes your cat’s lifeline. - Measure 3: Introduce a “sturdy retrofitted screen door” compatible with high-rise apartments.
After checking the management regulations of your building, consult a professional to install a pet-safe, tear-resistant inner screen door.
■ Summary

安全なリビングで、リラックスしてる猫
Tragic fall accidents occur from just a brief moment of carelessness, thinking “Not my cat.” The only one who can protect your beloved cat’s life is you, the owner. Please do not wait until the weekend; check your window settings and order the necessary stoppers or fences right now to ensure a safe and happy high-rise life for your cat.
