Rabbit characteristics: Two pairs of upper incisors; second pair small and peg-like, located just behind the front pair. Perforated lace-like texture of bone on side of skull in front of eye socket. (Both features not found in rodents). Long and pointed large ears. Arched upper profile of skull. Strong extension of spine where neck vertebrae meet thoracic vertebrae. Strong extension of middle tail vertebrae, raising tufted tail. Relatively thin, delicate bones. Rear-projecting "metacromion" from lower end of shoulder blade (for insertion of trapezius and omotransversarius muscles). Long hind limbs with large feet. Sits on sole and heel of foot. | 188 RABBIT ANATOMY DOMESTIC RABBIT FROM SPECIMEN Oryctolagus cuniculus Rabbit characteristics Two pairs of upper incisors second pair small and peg-like located just behind the front pair. Perforated lace-like texture of bone on side of skull in front of eye socket. Both features not found in rodents . Long and pointed large ears. Arched upper profile of skull. Strong extension of spine where neck vertebrae meet thoracic vertebrae. Strong extension of middle tail vertebrae raising tufted tail. Relatively thin delicate bones. Rear-projecting metacromion from lower end of shoulder blade for insertion of trapezius and omotransver-sarius muscles . Long hind limbs with large feet. Sits on sole and heel of foot at rest pushes off with toes. Front limb walks on toes. Five digits on front limb four on rear limb. Females larger than males. Moves by hopping. Covered with thick fur. Bottom of feet covered with fur. Claws on digits. Hares generally larger more upright slender with longer ears than rabbit but true difference is in development of young at birth. AbDIL Abductor digit I long us AbDi5 Abductor digiti V Basci Basioclavicularis Bicep Biceps brachii BiFem Biceps femoris Brae Brachialis Bucc Buccinator Canin Caninus Cldel Clavodeltoid Clmas Cleidomastoid DelAc Deltoid acromial portion DelSc Deltoid scapular portion DLaMn Depressor labii mandibularis ECR Extensor carpi radialis ECU Extensor carpi ulnaris ED1 2 Extensor digiti I II ED1L Extensor digiti I longus EDC Extensor digitorum communis EDLat Extensor digitorum lateralis EDLon Extensor digitorum longus ExAbO External abdominal oblique FCR Flexor carpi radialis FCU Flexor carpi ulnaris FDP Flexor digitorum profundus FDS Flexor digitorum superficialis GasLa Gastrocnemius lateral head Gastr Gastrocnemius GluMe Gluteus medius GluSu Gluteus superficialis llioc lliocostalis Infra Infraspinatus LatDo Latissimus dorsi LeNas Levator nasolabialis LLaMx Levator labii maxillaris Longi Longissimus Malar Malaris Mass Masseter .