Question about taurine

[irotas]

I found a strange statement on the following website:
http://www.californianaturalpet.com/...fault.asp?id=3

On that website, they say "Although Taurine, an amino acid, is already present in lamb meal, it has been supplemented to benefit certain breeds."

What do they mean by "certain breeds"? Are some dogs unable to utilize taurine found in animal meat?

I emailed Natura Pet with this question over a week ago, but they never replied to me.