No its not because you took him out the other day and its not because they fed him in a separate tub.. Your husbandry is good so its because he isn't ready thats all. No big deal trust me. Did you close the tub once you put the Rat in? If not he wont eat most likely. They dont like being bothered or feeling exposed when they are going to eat because their vulnerable.
The rat wont make it long because its eyes are still closed.. You also didn't do as i said and wait until Night Time. I was trying to give you a perfect 1st feeding thats why I also told you a mouse. The mouse would've lasted a week at your house. Not a rat that needs to feed on its mother still.
Sent from my iPhone using Tapatalk