Just because a dog may feel warm to the touch doesn't certainly mean it has a fever. Dog's normal temperature is usually higher than ours. That's why a dog may seem to be too warm when we touch it.

This might be interesting: A temperature of 101 to 102.5 degrees Fahrenheit (38.3 to 39.2 degrees Celsius) is absolutely normal for a dog, while humans' usual temperature is 98.6 degrees Fahrenheit (37 degrees Celsius), with an average range of about 97 to 99 degrees Fahrenheit (36.1 to 37.2 degrees Celsius).