READ OUT LOUD. Choose which marked text you prefer to practice with - macrons in verse form, or macrons in prose order, or accent marks in prose order, or focusing on the meter. You will find materials for all of these options below. :-)
VERSE MACRONS. Here is the verse text with macrons:
Dum saevīs ruerent in mūtua vulnera tēlīs,
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Accurrit vultur spectātum, et prandia captat.
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PROSE MACRONS. Here is the same text with macrons written out in prose word order:
Dum leaena, ungue ferox, aper, dente timendus, tēlīs saevīs in vulnera mūtua ruerent, vultur spectātum accurrit et prandia captat. Victōris glōria sua praeda futūra est.
STRESS (ACCENT) MARKS. Here is the prose text with accents, plus some color-coding for the words of three or more syllables (blue: penultimate stress; red: antepenultimate stress):
Dum leaéna, ungue ferox, aper, dente timéndus, telis saevis in vúlnera mútua rúerent, vultur spectátum accúrrit et prándia captat. Victóris glória sua praeda futúra est.
ELEGIAC COUPLET METER. Below I have used an interpunct dot · to indicate the metrical elements in each line, and a double line || to indicate the hemistichs of the pentameter line.
Dum sae·vīs rue·rent in· mūtua· vulnera· tēlīs,
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Accur·rit vul·tur spec·tāt~, et· prandia· captat.
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IMAGE. Here's an illustration for the fable (image source) from a 1621 edition of the emblems:
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What follows is an unmarked version of the prose rendering to faciliate word searches:
Dum leaena, ungue ferox, aper, dente timendus, telis saevis in vulnera mutua ruerent, vultur spectatum accurrit et prandia captat. Victoris gloria sua praeda futura est.