idnum = int(input(What is your id number:

idnum   = int(input("What is your id number: "))

dogName  = input("What is your dogs name ")

dogBreed = input("What is your dogs breed ")

dogAge  = int(input("What is your dogs age "))

dogWeight = int(input("What is your dogs weight "))

if dogWeight < 15:

  fee = smallFee = 55

elif dogWeight <= 30:

  fee = medFee = 75

elif dogWeight <= 80:

  fee = largeFee = 105

elif dogWeight > 80:

  fee = xlargeFee = 80

print (" ID:",idnum,"n","Name:",dogName,"n","Breed:",dogBreed,"n","Age:",dogAge,"n","Weight:",dogWeight,"n","Total Amount:",fee)

This is the code i have written so far but I need to do a program that continuously accepts dogs' data until a sentinel value is entered, and displays billing data for each dog.