What are the key differences between temporary and permanent teeth in ruminant animals, and where does tooth eruption begin?

a) Teeth eruption in ruminant animals starts from what part of the mouth?
Teeth eruption in ruminant animals starts from the front part of the mouth, specifically the incisors in the lower jaw.

b) What are the physical characteristics that can be used to differentiate the temporary teeth of a ruminant animal from the permanent teeth?

• Size: Temporary teeth are generally smaller and narrower than permanent teeth.
• Color: Temporary teeth are often whiter and brighter, sometimes described as "milk-white," compared to the more yellowish or off-white permanent teeth.
• Shape: Temporary teeth tend to have a more delicate and less robust appearance.
• Spacing: Temporary teeth may appear more widely spaced as the jaw grows before permanent teeth erupt.