Table: Eruption of the Teeth a - Merck Veterinary Manual

Eruption of the Teeth ^a

	Horse	Cow	Sheep and Goat	Pig	Dog	Cat
Di 1	0–1 wk	Before birth	0–1 wk	3–4 wk	4–5 wk	2–3 wk
Di 2	4–6 wk	Before birth	1–2 wk	2–3 mo	4–5 wk	3–4 wk
Di 3	6–9 mo	0–1 wk	2–3 wk	Before birth	3–4 wk	3–4 wk
I 1	2½ yr	2 yr	1–1½ yr	12–15 mo	4 mo	4–7 mo
I 2	3½ yr	2½ yr	1½–2 yr	16–20 mo	4½ mo	4–7 mo
I 3	4½ yr	3½ yr	2–2½ yr^b	8–10 mo	5 mo	4–7 mo
Dc	Does not erupt	0–2 wk	3–4 wk	Before birth	3–4 wk	3–4 wk
C	4–5 yr	3½–4 yr	2½–4 yr^c	6–10 mo	5–6 mo	4–7 mo
Dp 2	0–2 wk	0–3 wk	0–4 wk	4–6 wk	4–6 wk	5–6 wk (upper only)
Dp 3	0–2 wk	0–3 wk	0–4 wk	1½ mo	4–6 wk	5–6 wk
Dp 4	0–2 wk	0–3 wk	0–4 wk	1–5 wk	4–6 wk	5–6 wk
P 1	5–6 mo (wolf tooth)	—	—	5 mo	4–5 mo	—
P 2	2½ yr	2–2½ yr	1½–2 yr	12–15 mo	5–6 mo	4–7 mo (upper only)
P 3	3 yr	2–2½ yr	1½–2 yr	12–15 mo	5–6 mo	4–7 mo
P 4	4 yr	2½–3 yr	1½–2 yr	12–15 mo	5–6 mo	4–7 mo
M 1	9–12 mo	5–6 mo	3–6 mo^d	4–6 mo	4–5 mo	4–7 mo
M 2	2 yr	1–1½ yr	9–12 mo	8–12 mo	5–6 mo	—
M 3	4 yr	2–2½ yr	1½–2 yr	18–20 mo	6–7 mo	—
^a Average data, subject to considerable variation
^b 2 yr in goats
^c 2½–3 yr in goats
^d 3–4 mo in sheep

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