Gorilla indoor exhibit at Rostock

One of the two gorillagroups at Rostock, in the Darwineum.

It is very interesting to see grass in an indoor exhibit, as I cannot think of ever seeing a natural substrate other than perhaps hay/straw in an indoor ape enclosure. Perhaps Lincoln Park Zoo and others have some kind of bark mulch, but I definitely have never seen gorillas on grass indoors.

The rich abundance of sunlight makes the difference for indoor facilities.

I think Beauval in France has(or had) a similar arrangement in their 2nd/modern ape accomodation.

I wonder if this male is 'Assumbo' who was born at Jersey and has lived alone for very many years?

All of the indoor great ape spaces in Liepzig's "Pongoland" have soil/grass substrate--all four species.

It is him!

It is certainly a big improvement in surroundings for him. The question is can he breed with females now after so many years of either being alone or with unsuitable/aged partners.