According to the Veterinary Clinic in Brunswick, they've been getting a lot of calls about these spots that look an awful like tick bites! They are not...

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According to the Veterinary Clinic's Facebook page:

We get quite a few phone calls and appointments this time of year from concerned pet owners regarding red circles on their pups' bellies. Despite the bullseye appearance, these are NOT lesions indicative of Lyme disease like in humans; they are simply black fly bites! Luckily, black flies are not known to transmit any diseases and the large welts will go away on their own.

Poor Casco was covered...and she is fine. Thank God it's a short season. Thank you very much Veterinary Clinic for calming our nerves!