I have a horse that's recovering from a stone bruise so I've been checking his digital pulses quite frequently. Obsessively is probably the best adjective. 1-One thing I've noticed is that even if the hoof is stone cold (10F here at the moment), if I check for a pulse the first time and feel nothing, if I go back subsequent times within a short time frame a palpable pulse will develop. 2-I've also been a bit baffled to find that on the injured hoof, if I feel a strong pulse the first time I check then go back five minutes later, sometimes it will have all but disappeared. What could be the explanation for both scenarios? I would think that if there were inflammation, the pulse would be fairly consistent. In both instances the horse is "cold"- as in not having been exercised.