Rhyming word pair for happy boy?
Rhyming word pair for home for a rodent?
mouse house, rat flat
house mouse
fat rat
pink mink
fat rat
fat rat
Mouse House or Rat flat
Fat rat is probably the phrase you are looking for. A rat is a rodent, and fat means overweight.
hen pen
An active home for bees is a 'live hive'.
mouse house, rat flat