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  One other female that I have just happens to be the mother of that Cypress female. she has had two normal litters and now she will act like she is coming in heat, drip a little blood for a couple of days and thats it. Will not flag or show any interest in a male. All my other females seem to have normal cycles. A hereditary  deal maybe except all my dogs are related top and bottom. Another thing I have noticed, none of my females ever come in heat around 9-10 months. The seem to come in around 15-16 months of age.

Driving and didn’t get to read over everything yet, but didn’t see it mentioned at a glance. Are you letting these dogs live together through duration of heat?
Sometimes a lady demands a long courtship before they’ll bed down with a man.


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Maybe I’m just slow Reuben, most of the “cheap” feeds are the ones that typically use the soy, grain, and chicken-by -products because of their availability and being cheaper to use.  I assume you are saying that because of that the dogs are having a more regular/stronger cycles when they come in?

I have preached against soy for years, in animals and people. They have found out that babies raised on soy formula have issues. Little girls that develop/mature early are usually soy formula babies and they usually have very erratic and severe minstrel cycles. Little boys that are raised on soy formulas are prone to having “man boobs” and maturing slower/later with less masculine characteristics. The estrogen hormone works the same in all species and we all know there has to be a balance. Peas are a cousin to soy as are peanuts. I don’t think peanuts are as high in this phytoestrogen. It’s in a lot of fruits and nuts but not as high. I don’t think it’s detrimental here and there but using it consistently is the issue. I’m bay no
means an expert. This is one of those things I have looked into because of my intestinal disease and my dogs.


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below I copied off of copilot...

some commercial dog foods contain ingredients that mimic estrogen or interfere with hormone signaling.
Phytoestrogens (Plant Estrogens)
These are natural estrogen‑like compounds found in:

Soybean meal

Corn gluten

Flaxseed

Pea protein

Many mid‑tier dog foods use these as cheap protein sources.

Phytoestrogens can bind to estrogen receptors and confuse the reproductive system, causing:

Delayed heat

Silent heat

Weak or incomplete cycles

Missed breeding windows

? 2. Excessive Grain-Based Diets
High‑grain foods (corn, wheat, sorghum) can:

Spike insulin

Increase systemic inflammation

Disrupt the hypothalamus–pituitary–ovary hormone axis

This can lead to irregular estrous cycles or anestrus (no heat)

I will say this as well, back in the 1970-90's i didn't feed the expensive dog foods because the expensive dog foods back then were super expensive like almost a dollar a pound...it was a rich mans dog food...and i never had any issues breeding dogs back then with the cheaper feed...I remember some were thinking it was an iodine issue once these problems started popping up...

T-Dog…I never did find out but I was using Sportsmix…I felt like it was the dog food because years before I had the same problem…

In fact, due to my lack of paying enough attention I had two accidental litters in the last year or so. One litter is about a year old and the other is 5 months.

There is your problem
Murphys law.......You want them bred and they wont have pups......when you don't want them, they will have 15 fat healthy puppies in the mud under the barn! LOL

I have terrible luck in breedings dogs so I am no help.

I would guess,  you could really only know the answer with the progesterone testing. It's my understanding they have to be tested every day in cycle to get what you need. Depending on availability to a vet it can make it inconvenient.

IDK how yall do it in this heat with all the bugs etc Good job

We just had that happen to our BMC's both mature and had good litters a few yrs back. And you know what bad luck we had with the dogos last yr

 I mentioned that the "keep" hasn't changed in years, that includes the dog food and the formula listed on it, so I haven't blamed the dog food. In fact, due to my lack of paying enough attention I had two accidental litters in the last year or so. One litter is about a year old and the other is 5 months.

Reuben, what was the difference in the dog food that made a difference in the heat cycle?


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