Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to identify a ragdoll cat [title] Look for blue eyes. [step] According to the breed standards for ragdoll cats, all examples of this breed must have bright blue eyes. If you see a cat without blue eyes, it is not a true ragdoll cat.

Ending1: However, it's great if you can identify one as a ragdoll. One of the easiest ways to identify ragdolls is to get past some advertisement; black cats are usually easy to spot, as they have a blue blur around them. Ending2: Ragdolls even have triangular eyes that meet in the middle of each eye. [substeps] Ragdolls have triangular-shaped eyes with a v-shaped nose. Ending3: [substeps] Ragdolls cats have short, thin skin and, unlike their owners, are exterminated by gas called ragweed. Ragweed produces a thick, sticky coating about the length of a rat's tail. Ending4: [substeps] Some breeders advertise non-blue-eyed variations of the ragdoll breed. However, this variant is not accepted by any major ragdoll association and isn't included in the written breed standard for ragdoll cats.

Answer format: ending1/ending2/ending3/ending4