diff --git a/src/Library/CreatureData/CreatureSpecies.hpp b/src/Library/CreatureData/CreatureSpecies.hpp
index 28c368a..feb6719 100644
--- a/src/Library/CreatureData/CreatureSpecies.hpp
+++ b/src/Library/CreatureData/CreatureSpecies.hpp
@@ -23,6 +23,12 @@ namespace CreatureLib::Library {
         CreatureSpecies(uint16_t id, std::string name, const SpeciesVariant* defaultVariant,
                 float genderRatio, std::string growthRate, uint8_t captureRate, uint8_t baseHappiness);
 
+        ~CreatureSpecies(){
+            for (auto v: _variants)
+                delete v.second;
+            _variants.clear();
+        }
+
         [[nodiscard]] const SpeciesVariant* GetVariant(const std::string& key) const;
         [[nodiscard]] Gender GetRandomGender(Core::Random& rand) const;
     };
diff --git a/src/Library/CreatureData/SpeciesVariant.hpp b/src/Library/CreatureData/SpeciesVariant.hpp
index 0071cc6..463428e 100644
--- a/src/Library/CreatureData/SpeciesVariant.hpp
+++ b/src/Library/CreatureData/SpeciesVariant.hpp
@@ -27,6 +27,7 @@ namespace CreatureLib::Library {
         SpeciesVariant(std::string name, float height, float weight, uint32_t baseExperience,
                 std::vector<std::string> types, Core::StatisticSet baseStats, std::vector<std::string> talents,
                 std::vector<std::string> secretTalents);
+
         [[nodiscard]] size_t GetTypeCount() const;
         [[nodiscard]] std::string GetType(size_t index) const;
         [[nodiscard]] uint32_t GetStatistic(Core::Statistic stat) const;
diff --git a/src/Library/SpeciesLibrary.hpp b/src/Library/SpeciesLibrary.hpp
index e225abd..1f26050 100644
--- a/src/Library/SpeciesLibrary.hpp
+++ b/src/Library/SpeciesLibrary.hpp
@@ -13,6 +13,8 @@ namespace CreatureLib::Library {
         SpeciesLibrary() = default;
 
         ~SpeciesLibrary(){
+            for (auto s: _species)
+                delete s.second;
             _species.clear();
         }