About 4000 feral horses live in the Danube Delta,[1] 2000 of them in the Letea nature reserve*, where on one hand, they are among the last remaining "wild" (feral) horses living at large on the European continent,[2] but are also deemed to be a threat to the flora of the forest,[3] including some plants on the IUCN Red List of Threatened Species.

[5] The Letea population is not regulated and there are concerns that overgrazing is a looming problem.

[3] Some organizations objected to removal, holding that the horses had value in being adapted to the location and possessing natural social behavior.

Currently, there is an ongoing project, in collaboration with the World Wide Fund for Nature, seeking to find a way to remove these horses.

[4] While some organizations object to total removal and advocate for some animals to remain,[6] others are attempting to find a different preserve for the horses to live.