The heavy clay and rich minerals of its homeland help it to develop strong bone, and it matures late, generally around 6 to 7 years.
Infants born in, say, the International Year of Older Persons (1999) might mature late.
The breed tends to mature late, especially when raised in their native habitats.
McCloy matured late in football terms and he never played at Minor or Under 21 level for Derry.
Come here and tell me, girlie, Do you think my mind is maturing late, Or simply rotted early?
"He's got a ways to go, but a lot of big men mature late," General Manager John Nash said.
That is physically true, though in a deeper sense of the word, they mature late.
Skates have slow growth rates and, since they mature late, low reproductive rates.
There is a Japanese proverb which observes that great talents mature late.
One sport where boys who mature late are at a particular disadvantage is football.