We have them under our house in Ok! We have shot 4 so far as they come out at night to eat frogs, etc. Are you sure wasp spray will kill them? I wonder about repelling them if we sprayed under the house? The Ok `Snake Man` said cats would eat the food source & that would help keep them away, guess we`re feeding our cats too much cat food! We had them once before (10 killed) when we had no cats. But now 4 years later with cats, they are back. Also heard a dead snake left lying around would repel them. Any ideas? I have grandchildren. (My next house will NOT have a crawl space under it.)
Testosterone is significantly correlated with aggression and competitive behaviour and is directly facilitated by the latter. There are two theories on the role of testosterone in aggression and competition.  The first one is the challenge hypothesis which states that testosterone would increase during puberty thus facilitating reproductive and competitive behaviour which would include aggression.  Thus it is the challenge of competition among males of the species that facilitates aggression and violence.  Studies conducted have found direct correlation between testosterone and dominance especially among the most violent criminals in prison who had the highest testosterone levels.  The same research also found fathers (those outside competitive environments) had the lowest testosterone levels compared to other males.