There's a wild rat IN your house, hanging about your cages??  Shouldn't you be seriously concerned about diseases and contamination?  I just don't know what to say to this happening.  I go nuts trying to keep the wild rodents out of my house because of disease and damage, so I would not be thrilled with this situation at all.  Maybe you should consult a good vet and see if there are any concerns you need to address during her pregnancy.  

Tunes is right. Good advice.....talk to the vet to see what may need to be done while the female is pregnant. Possibly a way to avoid the high chances of some type of infection.
Not every rat or mouse (wild that is) carries disease. We all have reason to be worried though. I mean look we get a new fancy rat and quarantine it before introducing it to our other rats so its kind of scary that a wild rat is hanging around. How long have you known this? Hopefully it has been around a while so you can rule out the chance it passed around any kind of disease.

All very good advice, i suggest you take it.

check out the article on rat reproduction on the rat fan club site. It'll be helpful.

Cracker and Jack are part wild rat. They look very much like our pet ratties except for their snouts and something.........about their eyes. They only like each other.  They go INSANE around other rats and become so aggressive that they end up in bad moods with each other.  They do however love me and love each other but thats it. They do not trust anyone. They are jumpy.  As I said before they have these high pitch squeaks that set off my security alarm the other night during a fight. They dont fight much with each other now that they are over one years old.  They do not bite anyone though. They simply run away from others.  They will take treats from people they do not know but wont eat them right away. They bury them and take sample bites to make sure its OK first.  Same with new foods. This is all natural instinct of a wild rat to make sure they are not being poisioned.
I read all about this and it all hit home when it comes to describing a wild rat and my two boys. I will have to post their pictures so you can see the difference in the way they look.  They do not like to be held. They do not brux outside of their cage. They sniff and smell me like crazy when I touch them after touching other ratties and puff out for no reason! LOL
They also HISS.  My other rats breathe hard when angry but never hiss. These two boys do and its not a nice sound. Not sure if this is a normal trait of a fancy domestic rat or not but out of 21 rats the only two that hiss are my mixed.
Anyhow I would say that it would not be a good idea to give away the babies if indeed they had wild rat in them unless the new owner understand the differences that MIGHT appear in their personalities.
When I adopted out the two rescue girls babies to Sanitisplayground, I kept the ones that were not real social basically because I did not want them to go to a new home and be even more introverted.  They have come out of their shell alot more since they are divided up and I can give them alot of attention.  I gave away the babies that were more outgoing and friendly.

There you have it.........a briefing on mixed rats.  I know that there are others on this board that have them too that can tell you that there may or may not be noticeable differences in them.  I see it with my two boys and really didnt notice when I first got them when they were typical hyper baby boys.  They were way too young when I got them (just 5 weeks old) and I was mad they were taken from their mom so young........and thought that is why they were so aggressive.  It wasnt until later on when I talked to the owner of the pet store that I found out that my new babies were part wild rat.  In fact only four babies survived that litter.

I never noticed with the other rats if hissing sounds scare them. Sudden noises of any kind scare them if everything is real calm but if its all chaotic nothing startles them!!

The hissing sound is bizarre and it means a very angry rat when you hear it. I usually take one out and put him in their spare play-time out cage for an hour to let them get out of their bad moods.
Like I said the older they get the less aggressive they seem.
I have an old sheet on the top of the cage and they LOVE to pull it in and make all kinds of little cozy corners to hide in. They are very unique rats.

I thought wild rats couldnt breed with domesicated rats.  Doesnt the female have a miscariage.  Or the babies are still born.  Thats what I always heard.

Hi again
Thank you so much for all your good feed back. We live in the country, so the father rat is not a sewer rat. Lily is healthy and definately pregnant. I just hope the babies are healthy and happy.
The idea of getting a live cage and taking the wild rat far away is a good idea. Ever since I had rats for pets, I don't want to kill any rat if I can help it.
A friend's kid left the cage open and that is how Lily got away in the first place. She loved it and kept on running away. I had nighmares of her getting eaten by a cat (they go under the house where she was) Once she wanted to go so bad, I just let her go. I couldn't be her jailer. Now that she is pregnant, she is much more settled. The other rats, Miriam and Poppy have never wanted to go on big adventures, just Lilly. She definately wants these babies. I hope they are pets. My two boys are excited as anything.
I certainly never imagined that this would happen!
It is fantastic to have other people out there who care about rats to talk to. Thank you to all!! marc

I thought I posted up above...........I have two males that are half wild rat.

They are FINE with each other.  They love me to death and play and act like normal rats except they are not as trusting with strangers and other little odd things I described.  
It does depend on how YOU raise them making sure you handle them as soon as mom rat allows you to handle them. Each mother rat is different.
Oreo let me touch hers from day one while Charlotte, who never bites, tore me to bloody shreds for weeks even when I went to simply feed her!
She is back to her old sweet self now btw.
Again I want to stress that just because they are part wild will not make them some crazed rat.  There is a chance they will be shy thats all.

My two part wild boys look almost the same except in the snout and ears.......and its even hard to tell unless you really know the difference.

Dont worry ok? It will work out. just do your best to keep all the babies if possible.  

I read that it was illegal to house wild rats because they can carry so many diseases and are harmful to other pets.

 

Are you not allowed to have pet snakes, then? I would imagine so, but I Googled it and all I found was travel info (that made me want to go there).

Jessi

No... because there aren't any in the country... And no, you aren't allowed to import them... they don't want any snakes in there for a reason (wildlife etc)

Do you all then say "Ooh, it's a snaaaake..."

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