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The primary palate develops into the premaxilla and lip. If closure is not complete this will result in a primary palate or cleft lip (harelip).
The primary palate develops into the premaxilla and lip. If closure is not complete this will result in a primary palate or cleft lip (harelip).
The secondary palate forms the hard and soft palate and incomplete closure of either of these results in a secondary palate or cleft palate.
The secondary palate forms the hard and soft palate and incomplete closure of either of these results in a secondary palate or cleft palate.
Possible causes may include administration of [[Antifungal Drugs#Griseofulvin|griseofulvin]] to queens during pregnancy, certain viral infections or ingestion of toxic plants.
==Signalment==
==Signalment==
Dogs are more commonly affected than cats. In particular brachycephalic breeds are more commonly affected due to the intra-uterine growth characteristics of the skull. Other at risk [[Canine Breeds - WikiNormals| dog breeds]] include, Boston terriers, Pekingese, minature schnauzers, beagles and cocker spaniels.
Dogs are more commonly affected than cats. In particular brachycephalic breeds are more commonly affected due to the intra-uterine growth characteristics of the skull. Other at risk [[Canine Breeds - WikiNormals| dog breeds]] include, Boston Terriers, Pekingese, Minature Schnauzers, Beagles and Cocker Spaniels.
Siamese are the most commonly affected [[Feline Breeds - WikiNormals|cat breed]].
Siamese are the most commonly affected [[Feline Breeds - WikiNormals|cat breed]].
Present at birth but not always noticed straight away.
Present at birth but not always noticed straight away.