Is it true that Welsh cobs and ponies develop late?

[welsh1704]

Hi guys can you help me please? My boy has just turned five, last Monday. Ive had to buy him a new bridle as he has out grown the one he had a year again. He has not started to fill out yet. I was told Welshies are late developers. Is this right? Thanks.

 

[Ladyinred]

Our lad finished growing when he was eight!! And mare was not that much earlier. Our youngest Sec D is 6 and she is physically more mature than the other two were at the same age, but mentally she is a baby still.