diff --git a/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/carnivores.json b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/carnivores.json
new file mode 100644
index 0000000..402ce85
--- /dev/null
+++ b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/carnivores.json
@@ -0,0 +1,6 @@
+{
+  "chestcavity": "chestcavity:types/animals/carnivore.json",
+  "entities": [
+	"betteranimalsplus:feralwolf"
+  ]
+}
\ No newline at end of file
diff --git a/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/crabs.json b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/crabs.json
new file mode 100644
index 0000000..21dd281
--- /dev/null
+++ b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/crabs.json
@@ -0,0 +1,7 @@
+{
+  "chestcavity": "chestcavity:types/compatibility/betteranimalsplus/crab.json",
+  "entities": [
+    "betteranimalsplus:crab",
+	"betteranimalsplus:horseshoecrab"
+  ]
+}
\ No newline at end of file
diff --git a/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/herbivores.json b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/herbivores.json
new file mode 100644
index 0000000..433bafd
--- /dev/null
+++ b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/herbivores.json
@@ -0,0 +1,8 @@
+{
+  "chestcavity": "chestcavity:types/animals/herbivore.json",
+  "entities": [
+    "betteranimalsplus:deer",
+	"betteranimalsplus:moose",
+	"betteranimalsplus:reindeer"
+  ]
+}
\ No newline at end of file
diff --git a/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/insects.json b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/insects.json
new file mode 100644
index 0000000..002d1b7
--- /dev/null
+++ b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/insects.json
@@ -0,0 +1,8 @@
+{
+  "chestcavity": "chestcavity:types/animals/insect.json",
+  "entities": [
+    "betteranimalsplus:bobbit_worm",
+	"betteranimalsplus:butterfly",
+	"betteranimalsplus:dragonfly"
+  ]
+}
\ No newline at end of file
diff --git a/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/large_fish.json b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/large_fish.json
new file mode 100644
index 0000000..6e7d25f
--- /dev/null
+++ b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/large_fish.json
@@ -0,0 +1,13 @@
+{
+  "chestcavity": "chestcavity:types/animals/large_fish.json",
+  "entities": [
+    "betteranimalsplus:barracuda",
+	"betteranimalsplus:eel_freshwater",
+	"betteranimalsplus:eel_saltwater",
+	"betteranimalsplus:octopus",
+	"betteranimalsplus:shark",
+	"betteranimalsplus:squid_colossal",
+	"betteranimalsplus:squid_giant",
+	"betteranimalsplus:whale"
+  ]
+}
\ No newline at end of file
diff --git a/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/omnivores.json b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/omnivores.json
new file mode 100644
index 0000000..e607e0f
--- /dev/null
+++ b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/omnivores.json
@@ -0,0 +1,11 @@
+{
+  "chestcavity": "chestcavity:types/animals/omnivore.json",
+  "entities": [
+    "betteranimalsplus:blackbear",
+	"betteranimalsplus:boar",
+	"betteranimalsplus:brownbear",
+	"betteranimalsplus:coyote",
+	"betteranimalsplus:turkey",
+	"betteranimalsplus:walrus"
+  ]
+}
\ No newline at end of file
diff --git a/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/slimes.json b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/slimes.json
new file mode 100644
index 0000000..ec97afc
--- /dev/null
+++ b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/slimes.json
@@ -0,0 +1,6 @@
+{
+  "chestcavity": "chestcavity:types/magical_beasts/slime.json",
+  "entities": [
+    "betteranimalsplus:jellyfish"
+  ]
+}
\ No newline at end of file
diff --git a/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/small_carnivores.json b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/small_carnivores.json
new file mode 100644
index 0000000..9c245d8
--- /dev/null
+++ b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/small_carnivores.json
@@ -0,0 +1,6 @@
+{
+  "chestcavity": "chestcavity:types/animals/small_carnivore.json",
+  "entities": [
+    "betteranimalsplus:lammergeier"
+  ]
+}
\ No newline at end of file
diff --git a/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/small_fish.json b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/small_fish.json
new file mode 100644
index 0000000..9e070aa
--- /dev/null
+++ b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/small_fish.json
@@ -0,0 +1,9 @@
+{
+  "chestcavity": "chestcavity:types/animals/small_fish.json",
+  "entities": [
+    "betteranimalsplus:flying_fish",
+	"betteranimalsplus:lamprey",
+	"betteranimalsplus:nautilus",
+	"betteranimalsplus:piranha"
+  ]
+}
\ No newline at end of file
diff --git a/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/small_herbivores.json b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/small_herbivores.json
new file mode 100644
index 0000000..ec6595a
--- /dev/null
+++ b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/small_herbivores.json
@@ -0,0 +1,7 @@
+{
+  "chestcavity": "chestcavity:types/animals/small_herbivore.json",
+  "entities": [
+    "betteranimalsplus:goose",
+    "betteranimalsplus:squirrel"
+  ]
+}
\ No newline at end of file
diff --git a/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/small_omnivores.json b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/small_omnivores.json
new file mode 100644
index 0000000..4210223
--- /dev/null
+++ b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/small_omnivores.json
@@ -0,0 +1,8 @@
+{
+  "chestcavity": "chestcavity:types/animals/small_omnivore.json",
+  "entities": [
+    "betteranimalsplus:badger",
+	"betteranimalsplus:pheasant",
+	"betteranimalsplus:songbird"
+  ]
+}
\ No newline at end of file
diff --git a/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/spiders.json b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/spiders.json
new file mode 100644
index 0000000..ba005f1
--- /dev/null
+++ b/src/main/resources/data/chestcavity/entity_assignment/compatibility/betteranimalsplus/spiders.json
@@ -0,0 +1,6 @@
+{
+  "chestcavity": "chestcavity:types/insects/spider.json",
+  "entities": [
+    "betteranimalsplus:tarantula"
+  ]
+}
\ No newline at end of file
diff --git a/src/main/resources/data/chestcavity/types/compatibility/betteranimalsplus/crab.json b/src/main/resources/data/chestcavity/types/compatibility/betteranimalsplus/crab.json
new file mode 100644
index 0000000..c318bac
--- /dev/null
+++ b/src/main/resources/data/chestcavity/types/compatibility/betteranimalsplus/crab.json
@@ -0,0 +1,31 @@
+{
+  "defaultChestCavity": [
+    {"item": "chestcavity:small_animal_muscle","position": 0},
+    {"item": "chestcavity:small_animal_rib","position": 1},
+    {"item": "chestcavity:small_animal_appendix","position": 2},
+    {"item": "chestcavity:small_gills","position": 3},
+    {"item": "chestcavity:small_animal_heart","position": 4},
+    {"item": "chestcavity:small_gills","position": 5},
+
+    {"item": "chestcavity:small_animal_rib","position": 7},
+    {"item": "chestcavity:small_animal_muscle","position": 8},
+    {"item": "chestcavity:small_animal_muscle","position": 9},
+    {"item": "chestcavity:small_animal_rib","position": 10},
+    {"item": "chestcavity:small_animal_spleen","position": 11},
+    {"item": "chestcavity:small_animal_kidney","position": 12},
+    {"item": "chestcavity:small_animal_spine","position": 13},
+    {"item": "chestcavity:small_animal_kidney","position": 14},
+    {"item": "chestcavity:small_animal_liver","position": 15},
+    {"item": "chestcavity:small_animal_rib","position": 16},
+    {"item": "chestcavity:small_animal_muscle","position": 17},
+    {"item": "chestcavity:small_animal_muscle","position": 18},
+    {"item": "chestcavity:small_animal_muscle","position": 19},
+    {"item": "chestcavity:small_carnivore_intestine","position": 20},
+    {"item": "chestcavity:small_carnivore_intestine","position": 21},
+    {"item": "chestcavity:small_carnivore_stomach","position": 22},
+    {"item": "chestcavity:small_carnivore_intestine","position": 23},
+    {"item": "chestcavity:small_carnivore_intestine","position": 24},
+    {"item": "chestcavity:small_animal_muscle","position": 25},
+    {"item": "chestcavity:small_animal_muscle","position": 26}
+  ]
+}
\ No newline at end of file