“…This range is supported by recent ultrasonographic studies of the teat canal that reported an overall average teat canal diameter of 1.9 mm (Klein et al, 2005) and average diameters of 1.24 to 1.53 mm, depending on DIM and milking system (Khol et al, 2006). These values, however, stand in contrast to those reported in 3 more recent studies that documented ranges of 0.66 to 0.78 mm (Szencziová et al, 2013), 1.09 to 1.11 mm (Strapák et al, 2017), and 0.99 to 1.22 (Martin et al, 2018), depending on the time of recording.…”