Dogs bred for field work tend to be longer and leaner than Labradors bred to prance around conformation shows.

WSJ: Everybody Loves Labradors, So Why Are They Underdogs?

Lamb, who was born and bred in Gloucester, has had off-field troubles and fell out of favour with Cherry and Whites coach Dean Ryan, but Booth is confident he can help the fly-half flourish.

BBC: London Irish sign fly-half Lamb