Help please

Niarra • February 2020- Gain an angel 👼🏽 09.09.2020 Ja’Siah & Jayceon & my rainbow baby Jahiem 💜new edition coming soon May 2023 October2021 #boymom

can somebody tell me what this is . I took her collar off and seen this , I gave her a bather a few days ago and it wasn’t there . I’m really freaky out cause I don’t know what it is