Tree Sap December is approaching fast so now is the time to think about things that cats/kittens can be allergic to such as the sap from pine trees (fresh christmas trees). There are many plants and flowers that cats/kittens are allergic to and that can kill them. If they ingest such as stamens from a lily or lick the pollen off their fur you must visit your vet with them - Poinsettia are poisonous to cats/kittens so please put them where your cats won't play with them or chew on them. If in any doubt at all please visit your vet! There are several sites on the internet with lots of information regarding poisonous plants.