A contributing characteristic to the burrow digging capabilities of aardvarks is an endosteal tissue called compacted coarse cancellous bone (CCCB).
ɐ kəntɹˈɪbjuːɾɪŋ kˌæɹɪktɚɹˈɪstɪk tə ðə bˈɜːɹoʊ dˈɪɡɪŋ kˌeɪpəbˈɪlᵻɾiz ʌv ˈɑːɹdvɑːɹks ɪz ɐn ˈɛndoʊstˌiəl tˈɪʃuː kˈɔːld kəmpˈæktᵻd kˈoːɹs kˈænsələs bˈoʊn sˌiːsˌiːsˌiːbˈiː.