diff --git a/resources/icarMovementArrivalEventResource.json b/resources/icarMovementArrivalEventResource.json
index 501e238..82b2e83 100644
--- a/resources/icarMovementArrivalEventResource.json
+++ b/resources/icarMovementArrivalEventResource.json
@@ -16,6 +16,10 @@
           "$ref": "icarAnimalCoreResource.json",
           "description": "Core animal details. Can be used if the animal has not already been defined on the holding."
         },
+        "animalState": {
+          "$ref": "../types/icarAnimalStateType.json",
+          "description": "State information about an animal."
+        },
         "consignment": {
           "$ref": "../types/icarConsignmentType.json",
           "description": "Identifies the consignment of the animal to the holding."
@@ -23,4 +27,4 @@
       }
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/types/icarAnimalStateType.json b/types/icarAnimalStateType.json
new file mode 100644
index 0000000..0ed1ca9
--- /dev/null
+++ b/types/icarAnimalStateType.json
@@ -0,0 +1,24 @@
+{
+  "description": "State information about an animal",
+
+  "type": "object",
+
+  "properties": {
+    "currentLactationParity": {
+      "type": "number",
+      "description": "The current parity of the animal."
+    },
+    "lastCalvingDate": {
+      "$ref": "../types/icarDateType.json",
+      "description": "RFC3339 UTC date (see https://ijmacd.github.io/rfc3339-iso8601/)."
+    },
+    "lastInseminationDate": {
+      "$ref": "../types/icarDateType.json",
+      "description": "RFC3339 UTC date (see https://ijmacd.github.io/rfc3339-iso8601/)."
+    },
+    "lastDryingOffDate": {
+      "$ref": "../types/icarDateType.json",
+      "description": "RFC3339 UTC date (see https://ijmacd.github.io/rfc3339-iso8601/)."
+    }
+  }
+}