Unprocessed milk from other bovids contains a similar fraction of lactose (goat milk 4.7%, buffalo 4.86%, yak 4.93%, sheep 4.6%);ButterThe butter-making process separates the majority of milk's water components from the fat components.
Unprocessed milk from other mammals contains similar lactose percentages (goat milk 4,1 %, buffalo 4,86 %, yak 4,93 %, sheep milk 4,6 %).