ニシローランドゴリラ「アニー」の近況（3/21更新：ゲンタロウとアニーの同居）

2026年3月21日追記：ゲンタロウとアニーの同居

以前からお知らせしているとおり、ゲンタロウとアニーの同居を休園日にのみ実施しています。
前回のお知らせ以降も、2月24日、3月9日・16日に同居を実施しました。

2月24日の同居はゲンタロウが風邪気味ではあったものの、初めて怪我なく同居を終えることができました。

3月9日の同居は二頭とも互いの距離の取り方がさらに上達したように見え、今までよりも緊張感が和らぎ、いい距離感を保っているように見えました。
ゲンタロウのディスプレイ（自分を誇示する行動）は頻発するものの、無事に同居を終えることができました。

3月16日の同居では、開始から10分までは前回と同様にゲンタロウがディスプレイを盛んにおこない、アニーが距離を保ちながらそれを見ているという様子が継続しました。
開始から10分を過ぎた頃から、アニーがゲンタロウとの距離を詰め始めました。
そのあたりからゲンタロウの誇示行動も激しくなり、アニーが放飼場の隅に行った際にゲンタロウが背後からアニーを捕え、臀部や肩などを負傷させました。
その直後、アニーは自力でゲンタロウから逃れ、ゲンタロウを追い回し複数回絡みがあったのちに膠着状態となったため、一頭ずつ室内に入れて同居終了としました。

今回、二度の同居を怪我なく終えることができ、大きく前進したかと思われましたが、最後の同居で、大変残念なことにまたアニーに怪我を負わせる結果となってしまいました。
今回の怪我は、以前に負った傷と同じ場所であることから、傷の衛生状態を保つため、しばらくの間アニーの放飼を休止いたします。
アニーは今までと同様に、日中は非公開の屋外ケージと室内を出入り自由にする方法で管理していきます。また、ゲンタロウを放飼している時間以外は、2頭が格子越しに見合いできる状況を継続していきます。

今後の同居については、アニーの怪我の治癒を待ったうえで、二頭にとって最善の方法を検討し、慎重に実施していく予定です。

Added February 19, 2026: Gentaro and Annie living together

With Annie's injuries largely healed, they were reunited for the second time on February 9, 2026.

Much like the first time, Gentaro grabbed Annie shortly after they moved in together and bit her in multiple places, including her left buttocks, injuring her again.
However, after that, Annie was seen successfully maintaining a certain distance from Gentaro and watching his displays (behavior showing off) from up on the artificial tree.

After careful observation, including a visual examination by a veterinarian, it was determined that Annie's injuries were not serious, so the two were placed together again on February 16th.
In this cohabitation, Gentaro did not immediately head straight for Annie, but gradually closed the distance between them.
Annie seemed to have improved her ability to keep her distance even more than before, and she watched Gentaro's display from the artificial tree with a much more calm demeanor.
This continued for about 15 minutes after the start, and as Annie got used to the situation, there were more and more scenes where she closed the distance between her and Gentaro.
Twenty minutes into the race, the two horses came face to face for the first time with no obstacles between them, and Gentaro caught Annie.
Annie sustained injuries to her back and buttocks during the incident.

During these two periods of living together, both dogs seemed to have improved considerably in terms of keeping their distance from each other.
Although there had been contact that resulted in injury, up until that point the two animals had maintained a certain distance from each other when on the ground together and were able to see each other.

Annie's injuries were not as severe as they were the first time, and even immediately after they stopped living together, she was seen approaching Gentaro through the bars.

We apologize for the concern caused by Annie's injury, but we will continue to work towards having the two dogs live together while carefully observing the condition of her injury and the condition of the two dogs.

Please note that for the time being, we plan to only allow cohabitation on days when the nursery is closed.

Update: December 28, 2025: Annie is recovering

Annie Western Lowland Gorilla we announced on December 10th, is recovering from her injury.

Therefore, from January 2, 2026, the release practice that was previously conducted on closed days will also be conducted on open days.
The time is scheduled to be after Gentaro is brought inside, but this may change depending on the weather and his health condition, so there is no set time.

We also conducted release practice on a closed day in December 2025, but there has been little progress beyond the animals being able to take one or two steps into the release area.
Therefore, even if the door to the enclosure is opened from inside the room, Annie will likely not come out into the enclosure, and you will likely not be able to see her.

Our first goal is to create an environment where Annie can feel safe going out to the enclosure.
Please wait a little while until Annie is officially released.

Update: December 10, 2025: Annie has been here for a month.

It has been a month since Annie arrived at the park.

When he first arrived at the zoo, he didn't eat much and remained quite wary, but once he began meeting Gentaro, his food intake gradually increased and he seemed to be more calm when he was near Gentaro.

Initially, the two dogs were only allowed to meet through the bars during the day, but gradually this was expanded to include nighttime viewing throughout the day.
On the first day of all-day matchmaking, we were able to observe them clasping their hands through the bars at night.
Therefore, we decided to let them live together in the enclosure on days when the park is closed.

However, as soon as they were put together, Gentaro began chasing Annie, and Annie, who was unfamiliar with the enclosure, was unable to escape and ended up being pinned down by Gentaro, who bit her limbs and other parts of her body, injuring her.

Annie then ran inside the house and fought back against Gentaro who was chasing her, and Gentaro was bitten by Annie, suffering several injuries, so their first time living together was quickly called off.

However, immediately after they started living together, Annie, despite being concerned about her injuries, would approach the bars and peek through the bars and door to see what Gentaro was doing.
As a result, the dogs have been seeing each other through the bars all day since the next day, but they continue to check in on each other just as they did before they started living together.

Gentaro has started to get used to his new environment and is enjoying being alone, but it seems that Gentaro's presence is becoming more important to Annie, as she cries out in anxiety when he goes out into the enclosure and disappears from sight.
The next time we live together will be after Annie has recovered from her injury and is in perfect condition.

We are currently conducting Annie's release practice on days when the zoo is closed, when there is as little stimulation as possible.
It is still difficult for him to go out to the enclosure on his own, only taking one or two steps, so we plan to give him time to get used to it.
Therefore, we ask for your understanding that it will be some time before Annie is released.

On days other than when the zoo is closed, Annie is free to come and go between the private outdoor cage and the indoor area during the day, allowing her to spend time wherever she likes.

Recently, Annie has been eating more food while watching Gentaro, and is responding obediently to training, so it seems she is gradually getting used to life at Ueno Zoo.

We will continue to carefully observe the relationship between the two dogs and Annie's health, and will carefully proceed with preparations for them to live together and be made public.
Please wait a little longer until it is released.

November 28, 2025: Annie after quarantine

The quarantine of Annie, a female Western Lowland Gorilla who came from Higashiyama Zoo and Botanical Gardens on November 4, 2025, ended on November 12, 2025.

When the male cub met Gentaro, who arrived at the zoo on October 27th, through the bars, he showed a relatively positive reaction, such as grooming himself and shaking his fingers with him.

From now on, we will use the days when the zoo is closed to get him used to the exhibit space, and we will monitor his condition as we move forward with living with Gentaro. Please wait a while before we make him public.

（2025年11月18日）
（2025年12月10日：近況を更新）
（2026年02月19日：近況を更新）
（2026年03月21日：近況を更新）