If you wean a calf at the time of the full moon, it will make less fuss. You mustn’t wean it when the sign is in the belly, or it will never grow fat. Pursue the same course with a pig, or it will squeal.
Western Massachusetts.

If you wean a calf at the time of the full moon, it will make less fuss. You mustn’t wean it when the sign is in the belly, or it will never grow fat. Pursue the same course with a pig, or it will squeal.
Source: Current Superstitions (1896), entry 1130.
Fanny D. Bergen, editor.
Modern normalized navigation; the historical attribution above remains unchanged.