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We found a lump on Shelby, and while this worried us, it didn't seem to to affecting Shelby at all. We tried to think of possible causes. She did hurt her leg a couple days prior, but she walked that off, and has been fine since then. Perhaps it was bruising? I had also given her a greenie the day before. Maybe Shelby swallowed part of it?

Steven took her to the vet, and she told us that sometimes dogs will have a reaction to the rabies booster. She instructed us to watch it for a month, and if it's still there, to bring Shelby back. No worries. She also mentioned that had it actually been someething lodged in Shelby's digestive track (i.e. Shelby eats something stupid) that we would feel it lower, more towards her belly.

May 18, 2005 | Permalink


Awww...poor lumpy. Maybe you can put a little ice pack on it. Polly's going in for her shots on Saturday; I better warn her about "the lumpy"...

Posted by: diana | May 18, 2005 10:04:24 AM

Is Shelby a swallower? Or does she like to actually chew her greenie? Or swallow big chunks of it? My Buster likes to swallow big chunks of greenie, so now I am thinking in order to avoid that, to get him the next size up greenie.

Posted by: h | May 18, 2005 10:27:05 AM

She might have bumped into something, but that's the only other thing I can think of. I wouldn't worry about it too much, unless it drastically changes before the month is up.

I think dogs are like people in that respect. My son always has a lumpy spot that lasts around a month or so after his immunizations. His doctor told me not to worry unless the skin color changed, it started smelling funny, or started to swell more. I'm sure Shelby will be just fine. :)

Posted by: Caitlin | May 18, 2005 11:59:27 AM

My cat, Eggs, develops tumors at his rabies injection site. Every time. They can last for months. The first time was very worriesome because they wanted to remove it surgically. I could not afford it at the time which was good since it eventually went away.

The law here states every cat (and dog) must be vaccinated against rabies. So I have had difficulty finding a vet who will treat him unless he has the shots.

This last time, the vet gave him the shot in the tail. The thinking was that if he did develop a tumor that did not go away, they could just cut the tail off. Nice, aye? Anyway, the look on my poor cats face told me it hurt him very, very much. And he was traumatized for days. And still has the tail tumor.

Posted by: Chrissycrunch | May 19, 2005 4:25:41 AM

Hi! Our dog Spaz (a pug) also had a lump just like that after his vaccine. We called the vet and got told the same thing. I think it went away in a week or so. It is quite worrisome though! Not that Spaz noticed it.

Posted by: Stacy | May 19, 2005 6:59:24 AM


I have two pugs....my older pug, Uly had the same exact thing happen...a lump developed at the rabies shot injection site. My vet suggested that it be removed after it had not gone away after two months. After the surgery he was weak and lethargic.....however the following day, he was back to his silly self...the only trouble was that he and his sister, Circe, had to be separated until the stitches came out....

good luck.....

Posted by: Leslie | May 19, 2005 1:37:20 PM

Shelby is a gulper. If she doesn't have to chew, she tends not to, which is why the end of a Greenie is sometimes a problem. She's thrown up pieces that were too big to digest, which is good because if they get into the intestines and get stuck, it requires surgery to remove it.

Posted by: Winnie | May 19, 2005 6:31:17 PM

Hi Winnie,

Love this site, we check it daily. We were worried just as you were when we found a lump on Mylo's left bum sowe took him in to see the vet and confirmed it was the rabies shot that gave him the bump. The bump showed up 2 days after the rabies shot.

Kiss Shelby for me!

Posted by: Nia | May 22, 2005 9:54:17 PM

i have a boston terrier beagle who just had her second set of shots, and i found a bump on the back of her neck. I was so scared but took her in and the vet told me that it was because of the shots. He actually worked it out of her neck (painful) but it was back later that night. He told me it would go away in a week. Poor little peach!

Posted by: leslie | Feb 8, 2006 10:39:05 AM

My puppies just had their shots last wednesday and its now sunday night and the lumps on the back of their necks are still there. I'm really worried...but it reassuring knowing that its common but how long does it take to go away ?

Posted by: Nga | Mar 19, 2006 7:55:10 PM

I can't remember how long it was. But it wasn't hours. More like days. But it wasn't weeks.

Posted by: Winnie | Mar 19, 2006 9:53:50 PM

HI I have a four month old pug named Sydney. I found a lump in almost the same place today 04-11-06. Sydney had her rabbies vaccine one week ago this is probably the same thing right? I have been so worried. Since a lot of people on here have pugs how much should they sleep. It seems like my 4 month old sleep alot. Thanks.

Posted by: Amanda | Apr 11, 2006 9:25:54 PM

My Boston Terrier just had his second rabies shot at one year and I noticed a bump on his neck. It feels like a marble under the skin. Anyhow, I'm pretty sure that those people who said it was caused by the rabies shot were right. I seem to remember he had the same lump when he got the last shot. In his case, it is not sensitive and doesn't seem to both him in the least.

Posted by: john | Apr 24, 2006 9:03:46 PM

Hi! I just found this site! I have a 4mth old Pomeranian. I took her in about a week ago for her rabies shot. I noticed a lump on her back towards her front right shoulder. It was not there prior to the shot. I just noticed it on Fri. I'm assuming it is from the shot. I called the vet and they said that it most likely was caused by the shot and that I should massage the area 2-3 times daily. She told me that sometimes the white blood cells will rush to the injection site to try and fight off the "invader". She told me that it is a sign my pup has a strong immune system. She also said if the lump gets larger or does not go away in a few weeks to bring her in to have it looked at. I was so nervous when i found the lump because I had a cat who had a lump and turned out to be cancer. We had the lump removed and she lived for 20 years!!! She recently passed away this past Nov. Anyways, I'm really hoping the lump is from the shot. But, my Pom has an appt. June 14th to get her third set of shots (kennel cough, and one other one). She is so small they had to do them in three stages (she weighs 3lbs). Anyways it is reassuring to read that other people's pets have had similar experiences.

Posted by: Desiree | Jun 7, 2006 1:29:03 AM

my puppy had a dworming shot and I noticed a lump on his back I have to call my vet but wanted some advice first.

Posted by: angela | Jun 15, 2006 5:18:14 PM

I have a 2 year old pug. I just noticed a small lump near her belly button. I just wanted some advice before I made a vet appt. Please help I am very worried. Thanks

Posted by: Rachel | Jul 12, 2006 8:23:06 AM

HI Our pug Simba has a lump on his right side . We took him to the vet and he said it was from a pencillin injection . That was 5 weeks ago! and the lump is just now coming up ?
He said to watch it and I swear it has grown . I am worried . anyone ever seen this ?
A lump this long after a injection ?
thanks debbie

Posted by: debbie | Sep 16, 2006 10:12:02 AM

Oh my god I've been online freaking out for the past 30 minutes until I found this site my dog got fixed and got all of her shots exactly a week ago today and I came home tonight and notice a lump right where u have it circle on your dog in the picture it's been a week though I don't see why it would come up now but anyways I'm still going to call the vet in the morning but reading all this made me feel so much better

Posted by: Brittany | Dec 19, 2006 11:50:32 PM

Oh my god I've been online freaking out for the past 30 minutes until I found this site my dog got fixed and got all of her shots exactly a week ago today and I came home tonight and notice a lump right where u have it circle on your dog in the picture it's been a week though I don't see why it would come up now but anyways I'm still going to call the vet in the morning but reading all this made me feel so much better

Posted by: Brittany | Dec 19, 2006 11:51:31 PM

My dog Califa got her shots a little over a week ago and has a big swelling (1 1/2 inches by 1 1/2 inches). I have been reading many websites on the matter. If it it does not diminish in 4 weeks it could very well be cancer. It is induced by agents put into the vaccine to make the immune system react more extemely than normal. The internet is getting stories of dogs with sarcoma after vaccination. It used to be only cats. Watch your dog's lump closely, even measure it when you first find it to you can really tell if it is going down. Also I heard that aspiration (taking a sample of it by needle)is not valid in this type of cancer. It should be cut out if it has grown after 6 weeks. Check it out on the internet. I know what it is to love your dog.

Posted by: esther | Jan 1, 2007 12:42:29 PM

My Goodness you guys are all a Godsend! I came on here in a panic. My almost 5 month old Pug, Abbey has a lump on her right side on her back and I was just freaking. She did have her vaccinations on the 23rd of Feb and I just noticed the lump tonight. After reading all your comments, I will be sure to watch it if it grows and hopefully rest assure its from her Rabies shot. Smooches*

Posted by: Jennifer | Mar 4, 2007 7:15:23 PM

OH MY GOSH!!!!! Thank goodness for the internet and these pages. I REALLY love my pug, boscoe, 3, and i was FREAKING, over his shots, he to has a lump on the back of his neck. So I will watch it over the next couple weeks and pray it will go down

Posted by: nikki | Apr 11, 2007 9:20:38 PM

i just got my pom and i have found a lump on his back he is only 6 half weeks old what should i do ???? i know that he got his shot's on the 21rd and a other on the 25 it was call revolution can this cause a limp?

Posted by: nancy | Apr 29, 2007 5:34:57 PM

I have four pugs (two that are 1 yr & 5 mos old) and two that are only 4 months. They all had their rabies vaccine in their left hind end area. The two older ones developed this lump 5 days after the shots and the two younger developed it 7 - 8 days later. Last year only 1 out of 2 got the lump. The vet's office said it is from the rabies shot but that it should not get larger and should go away within 3-4 weeks. I think is a natural reaction to rabies shots unfortunately, but we all should keep an eye on the lumps until they disappear or until they have lasted longer than a month. Good luck to everyone! Keep loving pugs!!!

Posted by: Leslie | Jul 23, 2007 3:56:26 PM

Hi leslie,

You have 4 pugs (& 3 of dem puppies)...how do you cope with the shedding, poo and pee? Do u hv domestic help?

Posted by: Lene | Jul 25, 2007 5:54:03 PM

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