Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to stop a cat from pulling its hair out [title] Understand pet allergies. [step] If humans have an allergy, say for instance hay fever, we tend to get sore eyes, a runny nose, and sneeze. Cats, however, react differently.

Ending1: We usually stick to cold weather if, and sometimes we let our nose and nose breath in certain amounts. Horses, for instance, try eating hay instead, and have a sneeze. Ending2: [substeps] If a cat is wet in the middle of a conversation, or continues to pull its hair out, the cats may have a reaction to treating a bug, and wants to avoid the situation. However, a cat may learn to ignore the smell from beneath the couch for even more. Ending3: The commonest manifestation of an allergy in cats is itchy skin, which in turns results in excessive grooming and pulling hair out. [substeps] In much the same way that some people have a peanut allergy, or a seafood allergy, or get hay fever, a cat may be allergic to one substance and be fine with another. Ending4: It can be completely normal for a cat to look unwell, but it can also cause serious problems. If you are in the middle of trying to help your pet get its hair off, ask if your friends or family who regularly feed it hay fever itch it.

Answer format: ending1/ending2/ending3/ending4