I have a digital thermometer. I didn't save the box and the intructions sheet doesn't give the brand name just model DT-01. I did buy it at a feed store when I couldn't find a regular one. The directions say to minus one degree F when used in the rectum. I used it earlier this year and it seemed to work fine. Ellie Moo just seemed a little blah. She didn't come to me when I went in the pen, she was just standing there. And when I went to her she didn't start licking me. So I came in the got the thermometer. Her temp is 98.9. For comparison I took Lizzy's temp, 100.6. That's with deducting the 1* per instructions. I went ahead and measured her to get her weight, and before I was done she did start licking me as normal. She weighs in at 383lbs. With a hay belly. She is eating and drinking. Is not dehydrated. She gets grass hay and calf grower. Our weather has been another thing, we went from 40-50 daytime, 20-30's at night to single digit-teens at night with day time in the 30's and high winds durring this. Lizzy had a dry cough for a couple days durring the wind but it went away. We are now back to normal, freezing at night, days in the 40's, and calmer winds. The snow is gone, but there is rain or snow in the forecast. Their poop is not runny, if anything it might be a little on the thick side. How worried should I be about this temp thing? I will start looking for a regular themometer again. I did have one but the temp went way up and I could not get it down. I even left it in the fridge, and shaking it down didn't work. I do like the digitals, but I always wonder if they are accurite. Ellie is a black angus, Lizzy is an angus cross. Ellie is 8 months, Lizzy is 6 months.