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:
Mūs gerēbat bellum cum rānā. Pūgna erat vehemens et anceps. Milvus, hōc certāmine procul vīsō, approperat, dumque neuter sibi cavet prae studiō pūgnandī, utrumque rapit et dīlaniat.
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):
Mus gerébat bellum cum rana. Pugna erat véhemens et anceps. Milvus, hoc certámine procul viso, appróperat, dumque neuter sibi cavet prae stúdio pugnándi, utrúmque rapit et dilániat.
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:
Mus
gerebat bellum
cum rana.
Pugna
erat vehemens et anceps.
Milvus,
hoc certamine procul viso,
approperat,
dumque
neuter sibi cavet
prae studio pugnandi,
utrumque rapit et dilaniat.
IMAGE. Here is an illustration for the story (image source), by Milo Winter:
