1) Mother phasing out nursing 2) Non-suckling baby 
a young animal that has been weaned, from its mother, until it is about a year old.
A young animal that has been weaned from its mother`s milk to live completely on pasture. (See 'vealer').
Lamb after weaning to 12 months. No exact age but approx from to 12 months.
An animal that has been weaned from its mother or has stopped suckling its mother (usually 5 to 7 months old).