diff --git a/app/main.py b/app/main.py
index af369a78..34696283 100644
--- a/app/main.py
+++ b/app/main.py
@@ -30,5 +30,5 @@ class Carnivore(Animal):
     def bite(herbivore: Herbivore) -> None:
         if isinstance(herbivore, Herbivore) and not herbivore.hidden:
             herbivore.health -= 50
-        if herbivore.health <= 0:
+        if herbivore.health <= 0 and herbivore in Animal.alive:
             Animal.alive.remove(herbivore)