When a toddler wakes with clusters of angry red bumps circling the ankles, it is rarely random. Fleas love low targets: bare feet, thin socks, loose pajama cuffs.
That tight grouping of tiny, intensely itchy spots—often in 2s and 3s—paired with any pet or carpet exposure makes flea bites a very realistic suspect.

The good news: they are usually more dramatic than dangerous, and you can start helping tonight.
Begin with comfort and protection: gentle washing, cool compresses, short nails, and a doctor-approved anti-itch cream on intact skin. Then shift quickly to the source.
Comb pets over a white towel, vacuum daily for a bit, and wash bedding on hot.

If the rash spreads strangely, your child seems unwell, or the story simply does not fit, trust that instinct and call a clinician.
You are not overreacting; you are making sure a simple bite story is not hiding something more.