We have a 10 week old calf. We have had her for about 3 weeks. A day after we got her, we had to call the vet. She had diarrhea, not too bad and a slight cough. He gave us antibiotics to give her, and she was fine after that. This morning when I gave her a bottle, she had trouble taking it. No diarrhea though. She was short of breath, had to stop taking it, cough a little to clear her airway, then take some more milk. She was fine last night. My husband gave her sub q antibiotics. When I got home and checked on her, she hadn't eaten her grain. She is able to get up, she is trying to eat a little grain now. Her respirations are fast. Her breaths are shallow. Her heart rate is fast. I am going to see if I can find a thermometer. Don't know her temp. I had read when they reach eight weeks old you don't have to be so exact with the temp of theit bottle. The last three times I gave her a bottle I didn't measure the temperature. It was warm but I didn't make sure it was between 95 and 100 degrees. I'm just kicking myself. If anyone has any suggestions, please let me know.