Is your facility providing relevant nesting material or are you just checking off a box?  This presentation will discuss the importance of nesting for rodents, their behaviors, and today’s laboratory environment.   Topics to be included include the importance of thermoregulation, the increased use of ventilator caging, what The Guide says regarding thermoregulation, as well as touching on rodent behaviors associated with lab environments.  The presentation will discuss types of nests along with types of nesting materials on the market today.  This talk will end with what studies have shown relating to the importance of providing nesting material.  Participants of this talk will learn important objectives of what to consider when evaluating nesting material and their program.