Are Mastiffs more expensive than smaller dogs?
Routine shots are between $60 -120 per year. Heartworm is $100 per year. Other medications are dependant on body weight, the larger the dog the higher the cost. Any surgery, including spay or neuter, also depends on body weight. Studies suggest that you wait with larger dogs to have them spayed or neutered until they are 1 year old so that the hormones help to close the growth plates in the bones – so the cost of this will be more due to the size of a Mastiff at one year old.