After 115 years of 'marriage', Bibi and Poldi have decided to call it a day.
The two tortoises are refusing to share their usual cage after Bibi attacked her partner - biting off a chunk of his shell.
Experts have given the pair counselling - feeding them luxury food and trying to get them to play games - but so far without effect.
Bibi and Poldi have been together at the Austrian zoo in Klagenfurt for 36 years and before that they lived at Basel zoo in Switzerland.
Zoo staff said nothing has changed in the pair's routine but Bibi in particular wanted to have the cage to herself.