Chihuahua pregnancy
Chihuahua pregnancy: gestation, litter size and C-section risk
Updated October 2026 · Information only, not veterinary advice
Step 1
What do you know?
Puppies are due
- Earliest, day 56
- Nov 24, 2026
- Latest, day 70
- Dec 8, 2026
A 14-day window, based on the mating date. Sperm can survive 5–7 days, so conception may be later than the tie.
Day 14 of 63 · week 2
22%
Breed profile
Chihuahua
toy breed
- Average litter
- 3 puppies (1–5)
- C-section risk
- high
Worth knowing
- High dystocia risk — ensure a vet experienced with toy breeds is on standby
- Eclampsia (low blood calcium) is a serious risk during nursing
- Single-puppy litters may produce oversized puppies requiring C-section
- Hydrocephalus ("water on the brain") is more common in apple-head Chihuahuas
Temperature watch: take her temperature twice a day from day 56. A drop below 99.0°F (37.2°C) means labor within 12–24 hours.
Source: Borge et al., Theriogenology 2011 — 10,810 litters, 224 breeds.
Your calendar
Sixteen dates to put in the diary
Chihuahua pregnancy at a glance
| Chihuahua | |
|---|---|
| Gestation from ovulation | 62 to 63 days (63 days average) |
| Gestation from mating | 56 to 70 days |
| Typical litter | 3 puppies (range 1 to 5) |
| Size group | toy breed |
| C-section risk | Higher than average |
Chihuahuas have elevated dystocia risk due to their tiny pelvis and relatively large puppy heads.
Small dog, big puppy heads
Litters are usually one to five puppies, and a single large puppy is a known risk. Many vets recommend an X-ray at about day 50 to assess puppy size against the pelvis and decide whether a planned C-section is safer.
Eclampsia and low blood sugar
Toy breeds can develop low blood calcium (eclampsia) during late pregnancy or nursing, with tremors, stiffness or seizures. Low blood sugar is also a danger. Both are emergencies. Do not give calcium supplements in pregnancy unless your vet tells you to.
Small meals and a warm, quiet room
Late pregnancy leaves little room for food, so offer four small meals a day of a high-energy diet. Keep the whelping area warm and draft-free, and have your vet’s emergency number ready.
What to watch for in Chihuahuas
- High dystocia risk — ensure a vet experienced with toy breeds is on standby
- Eclampsia (low blood calcium) is a serious risk during nursing
- Single-puppy litters may produce oversized puppies requiring C-section
- Hydrocephalus ("water on the brain") is more common in apple-head Chihuahuas
Dates to put in the diary
| When | What |
|---|---|
| Day 25 to 30 | Ultrasound to confirm pregnancy |
| Day 50 to 55 | X-ray to count puppies and check head size |
| From day 56 | Take her temperature twice a day |
| Day 63 | Expected due date from ovulation |
Add all of these to your phone with the whelping calendar, and track her temperature with the temperature log.
Call your vet now if…
- Green or black discharge before the first puppy is born.
- Strong straining for 30 to 60 minutes with no puppy.
- More than two to four hours between puppies when you know more are still inside.
- Tremors, stiffness, collapse or seizures at any point (possible low blood calcium).
Questions
Frequently asked questions
How long is a Chihuahua pregnant?
Chihuahuas are pregnant for about 63 days from ovulation, and most whelp in 62 to 63 days. Counted from a mating date, the normal range is 56 to 70 days, because conception can happen days after mating. Use the calculator on this page to get a date range.
How many puppies can a Chihuahua have?
A typical Chihuahua litter is about 3 puppies, with a range of 1 to 5. First litters and litters from older dogs are often smaller. An abdominal X-ray after day 50 gives the actual count.
Does a Chihuahua need a C-section?
Chihuahuas have a higher than average risk of difficult birth. Many vets recommend an X-ray at about day 50 to check puppy size, and a planned C-section is sometimes safer.
What are the signs a Chihuahua is pregnant?
Around three to four weeks you may notice a smaller appetite, pinker and larger nipples and a clear mucus discharge. Her belly grows from about week six. Confirm with an ultrasound at about day 25 to 30.
When should a pregnant Chihuahua have an X-ray?
Between about day 50 and day 55. By then the puppies’ skeletons show, so your vet can count them and compare head size with her pelvis.
Keep reading
Related tools and guides
Due date from ovulation or LH peak
Narrow the window to about two days with progesterone or LH dating.
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