“…In humans, clocks have been designed using varying numbers of CpG sites, from one site (e.g., an age predictor based on a CpG in the ELOVL2 gene; Garagnani et al, 2012) to several hundred sites (e.g., 353 sites; Horvath, 2013). Epigenetic clocks have also been developed for other species including the mouse (Stubbs et al, 2017;Petkovich et al, 2017;Thompson et al, 2018;Meer et al, 2018), chimpanzee (Ito et al, 2018), bat (Wright et al, 2018), canid (Ito et al, 2017;Thompson et al, 2017), humpback whale (Polanowski et al, 2014), minke whale (Tanabe et al, 2020), and bottlenose dolphin (Beal et al, 2019). Accurate age estimates can be valuable for conservation efforts and species management.…”