The minimum lot area in an agricultural zone shall be 20,000 square feet. Where domestic animals are kept, the total number of such animals, other than their young under the age of six months, allowed on a lot shall be limited to the square footage of the lot divided by the minimum areas required for each animal as listed below:
1. Horses, cattle: 10,000 square feet of area;
2. Goats, sheep: 5,000 square feet of area;
3. Bee colonies: 1,000 square feet of area;
4. Fowl, rabbits: 500 square feet of area.