full version:

i know an oold lady who swallowed a fly
i dunno why she swallowed a fly
perhaps shell die

i know an old lady who swallowed a spider
that wriggledandtickledandjiggled inside 'er
she swallowed the spider to catch the fly...

i know an old lady who swallowed a bird
how absurd to swallow a bird
she swallowed the bird to catch the spider...

i know an old lady who swallowed a cat
imagine that to swallow a kat
she swallowed the cat to catch the bird...

i know an old lady who swallowed a dog
what a hog to swallow a dog
she swallowed the dog to catch the kat

i know an old lady who swallowed a snake
she made a mistake in eating that snake
she swallowed the snake to catch the dog...

i know an old lady who swallowed a pig
yes her mouth was so big she could swallow a pig
she swallowed the pig to catch the snake...

i know an old laady who swallowed a goat
she just opened her mouth and he went down her throat
she swaallowed the goat to catch the pig...

i know an old lady who swallowed a sheep
what a feat to swallow a sheep
she swallowed a sheep to catch the goat...

i know an old lady who swallowed a cow
i dont know how but she swallowed the cow
she swallowed the cow to catch the sheep...

i know an old lady who swallowed a donkey
which maakes me feel a wee bit wonky
but she swallowed the donkey to catch the cow...

i know anold lady who swallowed a horse
she died of course