Birds, fish, dogs, cats, reptiles, and such animals generally recognized as household pets may be kept as pets only, and shall not be held or offered for sale or maintained or bred for any commercial use. Each household is limited to two household pets, each of which may be no more than 100 pounds in weight at maturity. The keeping of a dog or other domestic pet is not a right of an owner but is a conditional license. All pets shall be kept on a leash and may be walked outside the owner's lot only on areas designated for pets by the Board of Directors if any. The person in control of a pet shall be responsible for removing and disposing of pet excrement from the common area and into an approved trash receptacle. The owner of a lot in which a pet is kept assumes liability for all damage to persons or property caused by the pet resulting from its presence on the property.