Okay...here's what I found when I googled. Here's some links to pain response in cattle during Hot Branding, Freeze Branding and Sham Branding.
BTW...Sham Branding is when a room temperature brand up against the cattle. It's just used to record response, no branding actually occurs. Behavior of cattle during hot-iron and freeze branding and the effects on subsequent handling ease. http://tinyurl.com/yo4msk Pain Prevention for Branding of Cattle: http://tinyurl.com/3ctu7z Effects of restraint and branding on rates and acoustic parameters of vocalization in beef cattle http://tinyurl.com/2zkvdf If I had to brand....I'd reach for the freeze brand...every time. Raven Lucy & Molly, the Girl Doggies Huginn & Dixie Chick, the Back Behind the Barn Ponies Maggie Rose, the cat who makes me sneeze http://www.myspace.com/iceponygoddess Respect ALL Earthlings. We are all animals of this planet. We are all creatures.