The small red reptile head has a black body with six tentacles found in the bedroom and living room

Is it a leech planarian? 笄蛭planarian (jī zhì wō chóng) is a relatively low terrestrial flat-shaped animal, planarian class, family of leeches, belonging to the phylum Flattena. Its head is fan-shaped, and its body is flat and unsegmented, and it is symmetrical from left to right. >>>More

It may be moldy and mildew.

Go buy a bottle of Clorox's Hercules Mold Remover Cleaner and you're good to go >>>More

Won't burrow into the human body, which is the larvae of some kind of insect (flies or a small flying insect that specializes in parasitizing toilets and sewers). The larvae are generally cleaner than the adults, and I was worried that the water stains in the gaps on the bathroom floor would affect the human body. Generally, it takes several days from eggs to larvae, so it has to be thoroughly cleaned and washed with water. >>>More

Leeches, which can burrow into the skin, should be disposed of as soon as possible. >>>More

No way! No matter which country or nation pays attention to squareness, you are not good at this size!