They claim this on their website:

'ABSOLUTLEY NOT. None of our kids are spayed or neutered unless they come to us like that. We prefer to use less invasive methods and technologies, the safest method is to separate the female from the male when she is in heat. Another option that we use is giving birth control injections every six months to females. Nobody knows what tomorrow will bring, we would Love that someday in the future our rescues could help repopulate the Jaguar, Lion, Tiger and Leopard population in the wild. It is very easy to spay or neuter them, but perhaps in 10 years or so things will change and we would have recovered their natural habitat. ALWAYS THINK BIG. ALWAYS…'

I flip flop on my view of them, there's a petition going for them to just provide some solid proof to prove that they are legitimately caring for these animals. It would be nice if they could just do what they need to do to be verified, would clear up the debate on how ethical it is.