You have not mentioned the age of your child and whether he has been immunized till date.
The location and severity of wound also is important. It is quite possible that the wound might have got infected resulting in fever
Following a dog bite, the wound she be cleaned with plenty of soap and water.
Please see your doctor and once it is confirmed that there is a focus of infection, antibiotics can be started for your child. Also ensure that paracetamol
is going in the right dose and frequency.
Do not wait till saturday as we do not know the nature of the wound.