TT #160 · Parshas Shemini · Aliyah 6 · Passuk 29
Chabad.org — Vayikra Chapter 11 with Rashi
English: These are the creatures that are impure among the swarming things that swarm on the earth: the weasel, the mouse, and the various kinds of lizard.
Kerisos 4b.
E-Daf.com — Kerisos 4b (Tsurras Hadaf)
וְזֶה לָכֶם הַטָּמֵא. לִמֵּד עַל דַּם הַשֶּׁרֶץ וְהַשֶּׁרֶץ שֶׁמִּצְטָרְפִין זֶה עִם זֶה.
Aggregation — The verse is used to teach that the blood of a creeping creature and the creature itself can combine for the relevant measure.
The blood and flesh of a sheretz can combine for the stated measure.