<P> In addition to the incisors, premolars and molars, some, but not all, horses may also have canine teeth and wolf teeth . A horse can have between zero and four canine teeth, also known as tusks (tushes for the deciduous precursor), with a clear prevalence towards male horses (stallions and geldings) who normally have a full set of four . Fewer than 28% of female horses (mares) have any canine teeth . Those that do normally only have one or two, and these may by only partially erupted . </P> <P> Between 13 and 32% of horses, split equally between male and female, also have wolf teeth, which are not related to canine teeth, but are vestigial premolars . Wolf teeth are more common on the upper jaw, and can present a problem for horses in work, as they can interfere with the bit . They may also make it difficult during equine dentistry work to rasp the second premolar, and are frequently removed . </P> <P> Horses are diphyodontous, erupting a set of first deciduous teeth (also known as milk, temporary, or baby teeth) soon after birth, with these being replaced by permanent teeth by the age of approximately five years old . The horse will normally have 24 deciduous teeth, emerging in pairs, and eventually pushed out by the permanent teeth, which normally number between 36 and 40 . As the deciduous teeth are pushed up, they are termed "caps". Caps will eventually shed on their own, but may cause discomfort when still loose, requiring extraction . </P> <P> It is possible to estimate the age of a young horse by observing the pattern of teeth in the mouth, based on which teeth have erupted, although the difference between breeds and individuals make precise dating impossible . </P>

When does a horse lose its baby teeth
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