mtoto stood at aston upthorpe stud at a fee of £18,000, where he sired shaamit, celeric, serious attitude and many other horses including presenting, arbatax and maylane. he was retired from stud duties in 2006 and spent his retirement at aston upthorpe alongside zilzal. mtoto is grandsire to the 2008 cheltenham gold cup winner denman and 2011 grand national winner ballabriggs. on 24 may 2011 it was announced that mtoto had died aged 28. later taken as the name of a restored steam tractor (i.e. traction engine) built by john fowler (leeds).