The process whose specific outcome is the progression of a tendon over time, from its formation to the mature structure. A tendon is a fibrous, strong, connective tissue that connects muscle to bone or integument and is capable of withstanding tension. Tendons and muscles work together to exert a pulling force. [ GOC:yaf http://purl.obolibrary.org/obo/UBERON_0000043 http://www.ncbi.nlm.nih.gov/pubmed/21412429 ]