A salt lick is a block or piece of rock that contains salt and other minerals that animals lick to get the minerals they need. Salt licks are commonly provided for livestock, such as cattle, horses, and deer, but they can also be given to pet rabbits. However, there is some debate about whether salt licks are safe for rabbits, as too much salt can cause health problems. The general consensus is that salt licks are safe for rabbits over the age of six months. Before this age, rabbits should not have access to salt licks, as their bodies are still developing and they may be more susceptible to health problems. So if you're thinking about giving your pet rabbit a salt lick, make sure to wait until they're at least six months old.