Achondroplasia is a lack of growth in your dog's leg cartilage which results in dwarfism. Some dogs, such as Basset Hounds and Dachshunds, are bred to have achondroplasia. In other dogs, however, achondroplasia can be an "unintentional" condition.

Dogs with achondroplasia have extremely short legs.

Achondroplasia is an inherited condition.

Your vet will perform a physical examination of your dog and take x-rays of your dog's legs. 

There is no treatment for achondroplasia.

Since achondroplasia is inherited, affected dogs for whom achondroplasia is not part of their breed standard should not be bred. Likewise, you should not acquire a dog who has a family history of unintentional achondroplasia.

No, you cannot contract achondroplasia from your dog.