Staffy 'lumps' could be bites

[Hooli]

We think there is something in the garden biting our dog. It's taken a while to decide it seems to happen when she goes in the garden. As soon as she's 'attacked' (which doesn't happen more than once or twice a week on average) she gets covered in lumps about 1/2" across & maybe 1/4" high. They always start at the rear of her body & go upwards the worse it gets. Any suggestions what could be doing it?

She's up to date on flea stuff (we use the drops on the back of the neck) and we've bathed her & washed her bedding so pretty sure it's nothing in the house.

A pic, incase it helps.

[Hooli]

It won't be grass, we don't have any. It's patio outside, at least till we hopefully move soon.

We've googled hives in the past & I agree it looks similar, we can't work out the trigger though if that's what they are.

[Hooli]

Thanks Ben. They go down in a few hours or overnight. Just wish we could find the trigger to stop it happening.

[Hooli]

160 said:

My mums staffy has this she was told it was because she's allergic to fleas

Hmm kind of makes sense, the first time they ever came up was visiting a sheep farm & she did get bitten by a sheep tick. Maybe that triggered it?