Unfortunately, from what I heard, the San Diego Wild Animal Park stopped breeding Indian gaur (Bos gaurus gaurus), their reasons for this is because hardly any zoos are showing an interest in them, and gaur need as much space as rhinos, and most zoos only have room for one or the other, and rhinos happen to be more popular
In the past, the San Diego Wild Animal Park has been very successful with breeding Indian gaur (Bos gaurus gaurus), and has had nearly 200 births