Salt lick blocks are a convenient way to provide the salt that some livestock need. These large blocks are made from salt and other minerals that your livestock require to stay healthy. Cattle are perfect for a salt lick block. Cows have rough tongues that easily can retrieve the salt from blocks. Cows need a large amount of salt per day, especially dairy cows that are lactating and losing salt in the milk they provide. Blocks are convenient for cows as they can access the salt whenever they need it without having to portion salt to each head of cattle. Goats also are good candidates for a salt block. However, sheep are not. Sheep are sensitive to minerals, especially copper, which may be in many salt blocks formulated for cattle, horses or goats.