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The nipples on a female who has not yet had her first heat are quite small, but they swell with the first heat and never return to 'puppy size'.
If the bitch has been bred and is pregnant, then about 35 days after the mating the nipples will turn a deep pink colour and will begin to enlarge. The mammary glands produce the milk to feed the puppies and amazingly enough they manage to manufacture the right supply to meet the demand.
Bitches who are extremely maternal have been known to produce milk for a starving pup or another animal baby even though they are not pregnant or nursing their own litter.
The mammary glands are prone to cancerous tumors because of the estrogen produced. Once the bitch has been "spayed", (fixed or altered) the source of the estrogen has been removed and the chance of Breast cancer developing is greatly reduced. However, spaying (and neutering of male dogs) can carry risks of side effects, including increased chances of other cancers such as osteosarcoma and hemangiosarcoma, both of which have limited treatment options and a very poor prognosis, and Arthritis especially if done before an animal reaches maturity, so the decision whether or not to spay or neuter, and if so when, should be a careful one. Please note that both "sides" carry risks, but these risks are very small and are relatively rare. For more information on the possible health risks and benefits of spaying and neutering, search online for "long term health effects of spaying and neutering" and "Early Spay-Neuter Considerations." The first link that comes up with each of those searches will take you to pages that are very informative.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoThe most obvious answer would be because it is a pregnant bitch. If she is not pregnant, she could have recently had a heat cycle or be nearing the period when she is in heat. Her hormones make the nipples protrude and swell more than normal, changing their shape, hardness, and texture slightly.
Wiki User
∙ 16y agoIs it a bitch? I'd suspect she was pregnant.
Wiki User
∙ 14y agoWhat do i do for my dog, i think she's in heat but don't know for sure but her nipples are dry and bleeding?
Wiki User
∙ 12y agowhat would cause my female jack russells nipples to swell she "s bein treated for heart worms would that have something to do with it.
Wiki User
∙ 14y agoHow would you notice? :P
Perhaps your dog is pregnant.
Wiki User
∙ 14y agoSeems like the dog is going to have puppies!
Wiki User
∙ 12y agobecause the large niples are the mane nipples in it provides more milk just like a human that why im a vetrinarein in i know all about that kind of stuff
Wiki User
∙ 13y agoHow do you know they're itch
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How do you make your nipples swell up?
your nipples often swell up when you are cold, and often tickling them helps
Why do mares nipples swell when not pregnant?
The same as your own nipples: she likes to be petted there!
What cause nipples to swell?
It depends, you could be pregnant.
What causes left shoulder to swell?
what causes the left shoulder to swell
When during your cats gestation will her nipples swell?
Yes, during the later part of pregnancy they will swell and become slightly red.
How do you make your nipple bigger?
Well, your nipples swell when you get aroused or cold. But apart from that, there is no permanent way to increase the size of your nipples.
How many nibbles do dogs have?
Nipples. Not Nibbles. Nipples. A dog has eight to ten nipples.
Dogs nipples have shrunk and indented what does this mean?
they have crippled nipples:)
Does male gator pit bulls have nipples?
yes all dogs have nipples at least all my dogs have had them
What solution that causes a cell to swell cause of osmosis?
Solution causes a cell to swell by osmosis
What can cause blood passages to swell?
Infections causes it to swell
Can your puppy have nipples and not be pregnant?
Yes it can. All dogs have nipples, even the males.
