8 crawling creatures whose skin is considered independent of their flesh: Shabbat 107a-b
Flies
Egyptian flies are considered especially dangerous creatures: Shabbat 121b
Lice
Whether lice reproduce sexually: Shabbat 107b
Locusts
Locusts have flexible antennae, to prevent breakage when they bump into trees: Shabbat 77b
Locusts "see" via their antennae: Shabbat 77b
Locusts are blinded by moisture in the atmosphere: Shabbat 106b
Scorpions
Scorpions are frightened by "Samimit" which enter their skulls: Shabbat 77b
Scorpions from Chedyav are considered especially dangerous creatures: Shabbat 121b
Wasps
Wasps from Nineveh are considered especially dangerous creatures: Shabbat 121b
