Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to tell a horse's age by its teeth [title] Look a the color of the horse's teeth. [step] The color of a horse's teeth provide a general clue as to horse's age. The milk teeth are white, and the permanent teeth (which erupt at 2 ½ to 5 years of age) that replace them are cream-yellow.

Ending1: [title] Check the teeth surface if you don't already have them (all horses have their teeth! [step] ). A horse with a milk tooth disease should have the teeth checked by a vet. Ending2: With increasing age they turn brown (20 years plus). [title] Examine the shape of the chewing surface. Ending3: The teeth that subside at 2 ½ weeks are green and plump while the permanent teeth return at 4 ½ to 7 days of age. Older horses' teeth will not have any white portion. Ending4: The teeth on a milk horse tend to look darker than those on a pony's teeth. Avoid this important factor when considering the age of your animal.

Answer format: ending1/ending2/ending3/ending4