It depends on the actual rat
Rats out west can live off you for years. And never leave the house, usually kill their parents and inherit everything.
Rats from the east form in gangs called Homies, They kill anybody.
Then the Down South Rat. They Like breeding with each other and are fat and hate every thing.
The Mexican Rat, These are usually spotted hiding in the back of trucks.
The African American Rat, they like shiny things and are usually seen around prisons.
Not to be confuse with the South African rat, they are spotted around kid bedrooms
And the Irish rats, who hang around bars and brothels and just hope that they don't get captured by the Lib Dems
R.I.P Gene.