Rural School Leaflet. 



1081 



Fig. 31. — Lower nippers of a 

 ■five-year-old horse 



Fig. 32. — S^de view of 

 the teeth of a five-year- 

 old horse 



as they were when the colt was three years old. The cups have nearly 

 or quite disappeared from the lateral or comer milk teeth, often nothing 

 but a slight dark indentation being left. The tusks, if any, have enlarged, 

 but are still sharp at 

 their points and flat- 

 tish on the inside. A 

 side view of a four- 

 year-old mouth is 

 shown in Fig. 30. 

 Note that the crowns 

 of the two milk teeth, 

 one upper and one 

 lower, come together 

 closely over their en- 

 tire surface, while the 

 two permanent teeth do not meet at their back comers. 



Five years old. — At the age of about four years and nine months, 

 the permanent comer teeth make their appearance. Fig. 31. When 

 full five years of age, the outer exterior parts of the teeth meet. Fig. 32, 

 though almost one year of wear must take place before the lateral or 

 comer teeth are worn level over their entire surface. At five years 

 of age the horse has a full set of teeth, and the central teeth have two 

 years' wear. They have also changed slightly in shape, having become 

 rounder on the inside. The intermediate teeth show one year's wear. 

 The cups show in all, but are deepest and freshest in appearance in 

 the corner teeth. The tusks have enlarged, but are not yet blunt. 

 Six years old. — At six years of age, the cups in the lower jaw have dis- 

 appeared, or nearly 

 so, from the central 

 teeth, have become 

 smaller in the inter- 

 mediates, and the 

 corner teeth are up 

 and in full wear over 

 their entire sur- 



FiG. ^ 4-— Side view of the face. Figs. 33, 34. 

 'Pig. Z2,.— Lower nippers of a teeth of a six-year-old Sometimes how- 



six-year-old horse horse ' 



ever, a horse has 



shelly teeth, in which case the inside comer teeth may not be up and in 



wear; in fact, they may never come up, but always have the appearance 



of comer teeth that are not fully up. The center teeth have made 



--^ 



