Heart rates of warm-blooded animals

	      Mass (kg) HR (bpm) Reference
Mammals

mouse		 0.025   670	[1]
hamster		 0.060	 450 	[2]
rat		   0.2   420	[1]
guinea-pig	   0.3   300	[1]
rabbit		     1	 205 	[2]
rabbit		     2   205	[1]
cat		     2	 150 	[2]
small-dog	     2	 100 	[2]
monkey		     5	 192 	[2]
small-dog	     5   120	[1]
medium-dog	     5	  90 	[2]
large-dog	     8	  75 	[2]
large-dog	    30    85	[1]
human		    70	  72	[1]
human		    90	  60 	[2]
pig		   150	  70 	[2]
horse		   450    38	[1]
cow		   800	  65 	[2]
giraffe		   900	  65	[2]
horse		  1200	  44 	[2]
elephant          5000    30 	[2]
large-whale	120000	  20	[2]

Birds

canary		 0.020	1000	[1]
chick 		 0.050	 400 	[2]
pigeon		   0.3 	 185	[1]
crow		 0.341	 378	[1]
buzzard		 0.658	 300	[1]
wild-duck	   1.1	 190	[1]
chicken		   1.5	 275	[2]
hen		     2   312	[1]
domestic-duck	   2.3   240	[1]
turkey		  8.75   193	[1]

For mammals, this empirical formula from [3] predicts heart rate as a
function of mass:

	HR = 241/(M^(1/4))

(i.e., heart rate in beats per minute is roughly 240 divided by the
fourth root of the mass in kilograms).  Metabolic differences may make
this formula less accurate for other classes of animals.

References:

[1] Dave Rusin. Comparison of Heart Rate and Body Mass in Animals.
    http://www.math.niu.edu/~rusin/teaching-math/360/014.pdf (retrieved
    11 Oct 2007)

[2] Thayer Watkins. Animal Longevity and Scale.
    http://www.sjsu.edu/faculty/watkins/longevity.htm (retrieved 11 Oct 2007)

[3] Knut Schmidt-Nielsen.  Animal Physiology: Adaptation and Environment.
     5th Ed., Cambridge University Press, 1997.  (Cited in "Heart Size in
     Mammals", http://www.hhmi.org/biointeractive/heart_size/frames.html)

