add example with no listed mutations or parents

pyrat-api-no-parents-mutations-offspring.json

@@ -0,0 +1,22 @@
+[
+    {
+        "animalid": 1,
+        "eartag_or_id": "ID-001",
+        "species_name": "Mouse",
+        "sacrifice_reason_name": "Not usable age",
+        "dateborn": "2026-02-03T00:00:00",
+        "strain_name": "Line-A",
+        "mutations": [],
+        "parents": []
+    },
+    {
+        "animalid": 2,
+        "eartag_or_id": "ID-002",
+        "species_name": "Mouse",
+        "sacrifice_reason_name": "Not usable age",
+        "dateborn": "2026-02-04T00:00:00",
+        "strain_name": "Line-A",
+        "mutations": [],
+        "parents": []
+    }
+]

pyrat-api-no-parents-mutations.csv

@@ -0,0 +1,3 @@
+ID,Species,Sacrifice reason,DOB,Line / Strain (Name),Mutation 1,Grade 1,Mother,Father,Mother: Mutation 1,Mother: Grade 1,Father: Mutation 1,Father: Grade 1
+ID-001,Mouse,Not usable age,2026-02-03,Line-A,,,,,,,,
+ID-002,Mouse,Not usable age,2026-02-04,Line-A,,,,,,,,