Analysis of Allatsea

Out on a boat, with a threelegged stoat
A deaf rat, and a gerbil with piles
A flatulent cat, and a wonky eared bat
A hyena that giggles and smiles!
(No laughing matter)
Meerkat with a twitch, a warty nosed witch
Who had never once cast a spell
A flea with an itch, a giant called titch
And a dog that had no sense of smell!
(not to be sniffed at)
A pair of old queens
Several has beens
A bishop, and an actress from fame
Three popes, two retired!
Before they got fired
And of course a horse with no name!
( Flogging a dead 'un here?)