節深受限制及疼痛所苦。牠的疾病很可能是衰老自然產生,而非如物理創傷等外部因素。研究還透過在股骨中觀察到緊密排列的生長停滯線(英语:Growtharrestlines)(LAGS)與外部基礎系統(external fundamental system)來證明是隻年老個體。 Khishigjav Tsogtbaatar;
Pompei P, Baldi C, Mazzoni G. Mebendazole inhibits growth of human adrenocortical carcinoma cell lines implanted in nude mice. Cancer Chemother. Pharmacol
Campbell M, Kuthiala A, Bessho M, Jensen RA, Liu ET. BRCA1-associated growtharrest is RB-dependent. Proc. Natl. Acad. Sci. U.S.A. October 1999, 96 (21):