Article: Within days to weeks after its birth, the foal's first milk teeth start to erupt through the gums. The central incisors are generally the first to put in an appearance. The milk teeth are smaller and whiter than permanent incisors. They are shovel shaped with a distinct neck (adult teeth are more "tombstone" shaped). 9 month old: By 9 months of age the foal has a complete set of milk teeth, but not all the teeth have grown down sufficiently to be in wear. You can accurately age a horse from newborn to 5 years of age. Landmarks in this period include the eruption of all the milk (deciduous) teeth, and their replacement by permanent, adult teeth, which is complete by 5 years of age. 12 months old: All milk teeth present but the corner incisors are not long enough to be in wear (they do not touch the matching teeth from the opposite arcade). The milk teeth are white and spade shaped with a distinct neck. 2 years old: The corner incisors meet the opposite arcade and are now in wear (used for cutting grass and chewing). 3 years old: The center milk incisors are replaced by adult incisors. The adult teeth are bigger, blockier and lack a distinct neck. They are more yellow/cream in color than the milk teeth. 4 years old: Adult center and intermediate incisors, but the corner incisors are still milk teeth. 5 years old: All the incisors are now adult teeth. Aging an adult horse is done by taking multiple factors into consideration, such as marks on the chewing surface of the incisors, the angle of the teeth, various grooves in the enamel, and the presence of spurs. 5 year old: Adult teeth newly in wear. Incisors meet at a near vertical angle. Teeth are upright and blocky. The chewing surface of the incisors is concave. The shape of the tooth is cross section is oval. 5-9 years old: Cups are present on the chewing surface of the incisors. These grow out by 9-10 years of age, leaving lighter "marks", which are gone by 12 years of age. 7 years old: The upper corner incisor has a spur or hook where it overhangs the lower incisor. This is known as the "7 year hook" because it disappears by 8 years of age. However, this is an inconsistent finding and may be present on one side of the mouth but not the other. 10 years old: Galvayne's groove appears as a brown-colored mark at the gum line of the upper corner incisors. By the age of 11 years the chewing surface of the incisors is flat. The shape of the tooth in cross section is round. Stars appear (from 8-10 years) on the chewing surface of the incisors and become more distinct with age. 15 years old: Incisors meet at a near 90 degree angle. Teeth are elongated with a chisel like edge. Galvayne's groove is now halfway down the upper corner incisor. 20 years old: Galvayne's groove has disappeared from the gum line of the upper corner incisor. This is where the expression "long in the tooth" comes from, because an aged horse has long incisors that meet at an acute angle. The teeth are yellow or brown in color. The incisors are very long and sloping. The upper and lower incisor arcades meet at an acute angle. The cutting surface of the incisors are triangular. Galvayne's groove is absent from the gum line and grows out completely by 25- 30 years of age. 25 years plus, some teeth may start to loosen and fall out.
Question: What is a summary of what this article is about?
Identify the dental landmarks of a newborn foal. Recognize the dental landmarks of older foals and young horses. Look for dental landmarks in horses between the ages of 5 and 20 years old. Identify the dental landmarks of a senior horse (20 years plus).

Problem: Article: When you have achieved a thick, smooth paste, add teaspoon of vanilla extract. Mix in the two pounds of confectionary sugar gradually by pouring it in half a pound at a time, then stirring to mix. You can also use maple flavoring or almond extract if you prefer those flavors to vanilla. When you have added all the sugar, stir with a large, sturdy mixing spoon. With all the sugar added, the dough should be very thick and somewhat difficult to stir. Make sure to mix until all the sugar is integrated and the dough looks uniform. Once you have thoroughly mixed the dough, cover it and place it in the refrigerator for an hour. Refrigerating will thicken and stiffen the dough to give it a better texture. Clean off a counter or a large cutting board, then sprinkle on powdered sugar in a thin layer. You can also lay a piece of parchment paper on top of the counter or cutting board and sprinkle the sugar on the parchment paper. Take the bowl of dough out of the refrigerator and place the dough on top of the sugared cutting board or counter. Use a rolling pin to roll out the dough into a rectangle that is about of an inch thick. If you notice that the dough is too soft or sticky, sprinkle more powdered sugar. Scoop out cup of peanut butter onto the rectangle of dough. Use a knife to spread the peanut butter evenly until it covers the dough in a thin layer. You can use regular peanut butter or natural peanut butter depending on your preference. Regular peanut butter has a sweeter flavor, or you can use natural peanut butter, which has a more robust taste. Chunky peanut butter will add a crunch to the potato candy. Once you have added the layer of peanut butter, roll the dough starting at one side of the rectangle until the dough is rolled into a cylinder shape. Make sure not to press down on the dough too hard as you roll, but also try not to roll too loosely, or else there will be a lot of empty space within the roll. The roll should be a log-like shape that is the same thickness throughout. Roll the dough just as you would for a jelly roll or a cinnamon roll.
Summary: Add the vanilla and powdered sugar. Stir to completely mix. Refrigerate the dough. Sprinkle sugar on a cutting board. Roll the dough into a rectangle. Spread the peanut butter. You can also use either smooth or chunky peanut butter. Roll the dough.

Your doula should be a voice of reason during a hectic time and be able to calm you down when you're feeling stressed. If they're stressing you out simply during the interview, they're not a good match. Make sure you get along well with them, since you'll likely be seeing them regularly for a few months. If you can't trust someone in your home, let that be a deal breaker. Trust your own reactions, but also ask the opinion of anyone who accompanied you to the interview. To be extra sure, invest in a paid background search through your local law enforcement agency. Pregnancy and childbirth are stressful enough. The last thing you need is your loved ones bickering with or complaining about the doula. Go with the candidate who will nurture and support them, as well as you. Compare your notes with information you find from doula associations and your doctor. Check if your questions were answered thoroughly. If you really want an apprentice doula, make sure their supervisor makes up for any lack of knowledge.
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One-sentence summary --
Choose the candidate who meshes with you. Pick someone you'd be comfortable having in your home. Select someone who gets along with your housemates. Choose the most knowledgeable candidate.