For these small animals like rabbits, guinea pigs, birds, hamsters etc. Steffi Rein recommends to use CDS. Depending on the size of the animal, 1/2 to 4 drops, about 3-5 times a day over a period of 1-3 weeks is very effective in severe cases. Otherwise, the same single doses twice a day over a period of 1-2 weeks are sufficient.