1. They can keep growing up to 18months but usually considered full size by 12 months
2. Feed as often as they need. Usually every day or every other day. Breeding females need more often than others. Look at the condition of the Leo and decide.
3. Males mature earlier - from about 3 months onward. Females from about 4 months. Depends on size as well as age. BUT this does NOT mean they are ready for breeding at this age. Females especially should ideally be at least 12 months old to breed.