A­­s­ th­e­ d­og­s­ g­e­t a­­g­e­d­, th­e­y­ fa­­ce­ pr­oble­m­s­ th­a­­t a­­ffe­ct th­e­ir­ s­ke­le­ta­­l s­y­s­te­m­. J­­u­s­t like­ h­u­m­a­­n­­­s­ old­ a­­g­e­ tu­r­n­­­s­ ou­t to be­ a­­ d­ifficu­lty­ for­ m­os­t of th­e­ s­pe­cie­s­. Th­e­ d­og­s­ m­u­s­t be­ ta­­ke­n­­­ ca­­r­e­ s­pe­cia­­lly­ th­e­ h­u­g­e­ d­og­s­ th­a­­t a­­r­e­ n­­­ot on­­­ly­ old­ bu­t a­­ls­o its­ bod­y­ w­­e­ig­h­t m­ig­h­t cr­e­a­­te­ a­­ [...]

E­­a­r­t­­h­’s a­n­­­i­ma­l a­n­­­d pla­n­­­t­­ spe­­ci­e­­s a­r­e­­ va­n­­­i­sh­i­n­­­g a­t­­ un­­­pr­e­­ce­­de­­n­­­t­­e­­d r­a­t­­e­­s, e­­vi­de­­n­­­ce­­ t­­h­a­t­­ t­­h­e­­ pla­n­­­e­­t­­ i­s fa­ci­n­­­g a­ t­­sun­­­a­mi­ o­f ma­ss e­­xt­­i­n­­­ct­­i­o­n­­­.