Schweiss hydraulic doors can now be opened or closed during an unexpected power outage with a DC battery-motorized back-up control system. Doors are also engineered with a no-extra-cost drill-driven ...

A hydraulic door that crushed an endangered young gorilla to death at the San Francisco Zoo on Friday night was custom-made with a fully functional manual shut-off switch, a zoo spokesman said Sunday.

SAN FRANCISCO (KCBS) — Officials at the San Francisco Zoo said they retested the hydraulic door that crushed a young gorilla to death on Friday and found that its manual instant-stop switch was ...

Calgary Zoo officials confirmed on Wednesday that the recent death of a two-year-old gorilla was an accident resulting from human error. Eyare, a female western ...

A Calgary Zoo staff member mistakenly activated a door that struck the western lowland gorilla named Eyare, a report found. By Emmett Lindner A 2-year-old gorilla died of traumatic injuries last week ...