Dogs are more commonly affected than cats. There are no age, breed or sex predispositions for ''[[Giardia]]'' infection, but puppies and kittens are more likely to contract clinical disease than adult animals. | Dogs are more commonly affected than cats. There are no age, breed or sex predispositions for ''[[Giardia]]'' infection, but puppies and kittens are more likely to contract clinical disease than adult animals. |