Table 2 Successful respiration rate and heart rate measurements differed by sedation status, taxa, integument and fat thickness, and video quality. Percentages refer to successfully extracting a signal for vital rate measurements for that group. Percentages labeled with the same letter are not significantly different from one another, while different letters denote significant differences (p < 0.05)

Sedation status

 Immobilized (n = 18)

88.9%^a

72.2%^a

 Voluntary (n = 26)

76.9%^a

38.5%^b

Taxa

 Mammal (n = 33)

84.8%^a

66.7%^a

 Bird (n = 6)

50%^a

33.3%^b

 Reptile (n = 5)

100%^a

0%^c

Thick vs. thin

 Thick integument (n = 21)

66.7%^a

38.1%^a

 Thin integument (n = 23)

95.7%^b

69.6%^b

Quality of video

 Low quality (≤ 5, n = 14)

50%^a

14.3%^a

 High quality (≥ 6, n = 30)

96.7%^b

74.3%^b

Subcutaneous fat

 Sig. subcutaneous fat (n = 10)

60%^a

40%^a

 No sig. subcutaneous fat (n = 34)

88.2%^b

58.8%^b