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When will my puppy show symptoms after being bitten by a spider?

Updated on September 23rd, 2025

Pet's info: Dog | French Bulldog | Male | 2 months and 1 day old | 5 lbs

How soon do side effects start after a puppy has been bit by a spider?

1 Answer

Most Helpful Answer

Laura Johnson VMD

Answered By Laura Johnson VMD

Veterinarian

Published on September 29th, 2017

Hi, thanks for using Petco Pet Education Center, formerly Petcoach!

With most insect or spider bites we never see the actual event take place. Did you see a spider make that spot on Loui's belly or are you assuming it's a bite?

Most assumed bites cause hives, facial swelling and scratching. The picture could indicate an insect or spider bite but could be a lot of other things: start of a skin infection, contact allergy, trauma. If it is a spider bite you witnessed and there hasn't been any facial swelling or hives then hopefully the lesion on the belly is all you will see. Bit since he is so young and we are approaching the weekend, just have him seen by your Vet today so they can look at the area up close.

I hope this helps and have a great day!
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