Fat rat is probably the phrase you are looking for. A rat is a rodent, and fat means overweight.
A rhyming word pair for lengthy tune is long song
A rhyming word pair for a sad clown is down clown
Fake snake is the rhyming word pair for plastic serpent.
An active home for bees is a 'live hive'.
Smitten kitten is the rhyming word pair for young feline in love.
The rhyming word pair of beds of smelly animals could be: skunk's bunks.
Bleak peak is a hink-pink or rhyming word pair answer to the riddle "dreary mountaintop."
"Ten hen" is a rhyming word pair. A clue for that might be "Bo Derek's fowl."
The Sublime Kine live in the Laughter Pasture!
A rhyming word pair for an unhealthy sea mammal is a pale whale or frail whale
Yacht cot is the rhyming word pair for rollaway bed on a millionaires boat.
A Pale Male is the hink-pink or rhyming word pair that answers the riddle "colorless male."
Other brother is the rhyming pair for a second male sibling.
people who can croon a tune
That is called hink pink.
Inundation irritation.
There is a word pair which rhymes with an angry employer. The two word phrase would be, cross boss.
Hill Liddle middle
That might be a cool toadstool.
rude dude skanky Yankee
wee flea leetle beetle
legal beagleLegal Beagle.
great state, grand land
bony pony spare mare