Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to remove porcupine quills [title] Treat the animal promptly. [step] Porcupine quills are much less likely to cause lasting harm if they are removed from the animal within the first 24 hours. Animals that are treated during that period almost always make a full recovery.

Ending1: Delayed treatment, on the other hand, increases the chance of complications such as broken quill tips, eye or joint damage, and infection. Dogs that have quills in their mouth region may not be able to eat until they are removed. Ending2: However, quills that are very infected may need to be removed by a vet. [substeps] Porcupine quills release egg yolk into the body as a decancerous tumor and a deeper wound may prompt removal. Ending3: It's not uncommon for porcupine quills to cause serious infections so you should be sure to check the animal's body regularly for any foreign objects. Lice may be the source of your porcupine quills while the quills are simply disposing of them. Ending4: If you need to administer a shot, make sure to remove it from the animal's quills. [substeps] Porcupine quills should not be disturbed during this time.

Answer format: ending1/ending2/ending3/ending4