Is weight at adulthood more predictable if parents are similar in size?

[Wendy and Sophie]

Hello all.  We are considering F1 puppies from a couple of different breeders.  The first has large minis, where the dam is 90 lbs and the sire is 10 lbs.  They are predicting puppies at 30-40 lbs (they are 3 lbs at almost four weeks). We are also looking at standards with a different breeder, where the sire is 65 and dam is 55 lbs, and they are expected to be 55-65 lbs at adulthood.  I'm curious as to whether the second litter will be more predictable given that the parents are closer in weight to each other.  With the first litter, we are certainly open to a larger dog, but would not want a dog that's as large as the mom. The breeder thinks 30-40 will be the range, but I'm curious as to whether it's just less predictable with the big differential in the parents' weights.  The breeder has bred the sire before to a smaller dam and had puppies in the 20-35 lb range.

Thanks for any insights you can share! 

[Wendy and Sophie]

Thanks, Lucy's mom.  That's indeed good to keep in mind.

I have to be careful not to try to rush this; we just got booted from a litter after being on a wait list for about six months, so I'm a bit heartbroken and feel like I'm starting from scratch.  The breeder we chose won't be able to offer training (which is important to us) for at least a year, and I'm hoping not to wait that long.  Thanks for your thoughts.

[Brittney & Cally]

Are you saying you want the trainer to keep the pup for year for training?

[Wendy and Sophie]

Oh no! I'm saying we can't work with her because she won't be available for a year. we are looking at a month of training,.

[Brittney & Cally]

Oh, okay! I got a little nervous! I must have read
That wrong! There is sometimes places that can train your dog
But I would really consider you doing the jump start of training. It really is very rewarding
And you create a bond with the puppy!

[Karen, Jasper and Jackdoodle]

I agree.