NoDictionaries.com: You can find the word list for this fable online, and use it interactively (here are some tips on how to make best use of the tool).
READ OUT LOUD. Choose which marked text you prefer to practice with - macrons or accent marks - and read the text out loud until you feel comfortable and confident. Then, try reading the unmarked text at the bottom. It should be easy for you after practicing with the marked texts. :-)
MACRONS. Here is the text with macrons:
Vulpēs, quae nunquam leōnem vīderat, cum ei fōrte occurrisset leo, ita est perterrita, ut paene morerētur formīdine. Eundem cōnspicāta iterum, timuit quidem, sed nēquāquam ut anteā. Tertiō illī obviam facta, ausa est etiam propius accēdere, eumque alloquī.
ACCENT MARKS. Here is the text with ecclesiastical accents, plus some color-coding for the words of three or more syllables (blue: penultimate stress; red: antepenultimate stress):
Vulpes, quae nunquam leónem víderat, cum ei forte occurrísset leo, ita est pertérrita, ut paene morerétur formídine. Eúndem conspicáta íterum, tímuit quidem, sed nequáquam ut ántea. Tértio illi óbviam facta, ausa est etiam própius accédere, eúmque álloqui.
UNMARKED TEXT. Here is the unmarked text - after practicing with the marked text that you prefer, you should not have any trouble with the unmarked text:
Vulpes,
quae nunquam leonem viderat,
cum ei forte occurrisset leo,
ita est perterrita,
ut paene moreretur formidine.
Eundem conspicata iterum,
timuit quidem,
sed nequaquam ut antea.
Tertio
illi obviam facta,
ausa est
etiam propius accedere,
eumque alloqui.
IMAGE. Here is an illustration for the story (image source) by Francis Barlow:
Here is another illustration from the Medici Aesop, which is online at the New York Public Library website.