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Adult size?? How big will my puppy get?

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There is no exact way to predict adult size of your puppy. There are different charts and different theories. I have included one chart below for you to look at. Also very valuable is looking at the bloodlines and the sizes of the dogs in the pedigrees.

Different theories that come into play are:

"The Double It" This predictor says to double the weight of the puppy when it reaches 12 weeks (for a small breed dog and 14 weeks (for a large breed dog) of age.

"The Skin" Examine the skin. The looser it it, the bigger your pup, for he needs to grow into all that excess skin

"Bone Plate Closures" Remember Epiphyseal plates when studying your bones? Dogs have those plates too and they close between 8-11 months of age. These are their growth plates. Extrapolated...this means that a puppy will have 75% of its mature height by the age of 6 months.

 

The left hand column is the puppy's age in weeks. Weigh your puppy in ounces and then the adult weight is at the bottom of the column of the correct age and weight.

 

Birth

2 1/2 oz.

2 3/14 oz.

3 oz.

3 1/2 oz.

4 oz.

4 1/4 oz.

4 1/2 oz.

5 oz.

 5 1/2 oz.
1 week

3 3/4

4

5

5 1/2

6 1/2

7

8

9

9 1/2
2 weeks

5

5 1/2

6 1/2

7

9

10

11

12 1/2

13 1/2
3 weeks

6

7

8

9

11

13

14

16

17 1/2
4 weeks

7

8

9 1/2

11

13

15

17

19

21
5 weeks

8

9

11

13

15

17

19 1/2

22

24
6 weeks

9

11

12 1/2

15

17 1/2

20

22

24

27
7 weeks

10

12

14 1/2

17

19 1/2

22

24 1/2

27

30
8 weeks

11

13

16

19

21 1/2

24

27

29

33
9 weeks

12

15

17 1/2

20

23

26

29

32

35
10 weeks

13

16

19

22

25

28

31

34

38
11 weeks

14

17

21

24

27

31

34

37

42
12 weeks

15

19

22

26

30

33

37

41

45
13 weeks

16

20

24

28

32

36

40

44

49
14 weeks

17

22

26

30

34

39

43

47

52
15 weeks

19

23

28

32

37

41

46

51

56
16 weeks

20

25

30

34

39

44

49

54

59
17 weeks

21

26

31

36

41

46

51

57

62
18 weeks

22

28

33

37

43

48

54

60

65
19 weeks

23

29

34

39

44

50

56

62

67
20 weeks

24

30

35

41

46

52

58

64

70
21 weeks

25

31

36

42

48

54

60

66

72
22 weeks

25

32

37

43

49

56

62

68

74
23 weeks

26

33

38

44

50

57

64

70

76
24 weeks

26

33

39

45

51

58

65

71

78
25 weeks

27

34

40

46

52

59

66

72

79
26 weeks

27

34

40

47

53

60

67

73

80
18 months

2 lb.

2 1/2 lb.

3 lb.

3 1/2 lb.

4 lb.

4 1/2 lb.

5 lb.

5 1/2 lb.

6 lb.

 

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