diff --git a/well-known/icarAnimalIdentifierType.md b/well-known/icarAnimalIdentifierType.md
index aa10d85..545edf6 100644
--- a/well-known/icarAnimalIdentifierType.md
+++ b/well-known/icarAnimalIdentifierType.md
@@ -21,3 +21,4 @@
 | ca.caprine | [CFIA - Caprine Indicators](https://inspection.canada.ca/en/animal-health/terrestrial-animals/traceability/indicators) | ISO 11784 compliant RFID range for Candadian porcines | 124000341000000 | Number ranges `124000340000000` – `124000344999999` |
 | ca.lactanet | https://dairytrace.ca/ | ISO11784 compliant identifier per [CFIA - Dairy Cattle Indicators](https://inspection.canada.ca/en/animal-health/terrestrial-animals/traceability/indicators) | 124000123456789 | See ca.bovine |
 | ca.animalnumber | [Approved animal indicators - Inspection Canada](https://inspection.canada.ca/en/animal-health/terrestrial-animals/traceability/indicators) | ISO 11784 compliant RFID range for Candadian bovines. If not available, the registration id is used. | 124000123456789 / reg id (max 12 digits): 0123456789012 | See ca.bovine / If not available, the registration id is used. |
+| composite.withinherdid |  |  |  Used where there is no national scheme, but a composite ID is made by combining a herd or location ID with the animal ID, separated by a period. | "123456.2516" | |