I am a newbie here. We just spent awhile searching for my daughters first horse. The horses we looked at were in the criteria our local 4H leaders suggested, and bought a 15 year old Quarter Horse that has been shown in 4H almost his entire life. Thinking we did great, I get him home and notice he makes a snapping or creaking sound when he walks. It seems to be his back legs. He walks fine, doesn't seem to have any soreness, but I keep thinking what did I do? Hoping I didn't make a huge error in judgment. Anyone have an idea what could be making this sound and what I should do from here. The previous owners seemed to really spoil their horses, their stalls & farm were immaculate, all vet records were up to date and the horse just finished well in their 09 county fair. I thought I did good. Any advice would be appreciated.