SOURCE: You can find both the first and second "hecatomythia" of Abstemius in Nevelet's monumental Aesop published in 1610, available at GoogleBooks. You can find out more about Abstemius at the Aesopus wiki. This is fable 153 in Abstemius. Perry only includes a few sporadic fables from Abstemius in his index, and there is no Perry number for this fable.
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:
Lupus ex altā speculā contemplātus canēs geminōs gregis ovium custōdēs inter sē pugnantēs, et sēsē mūtuīs morsibus dīlacerantēs, spem concēpit posse tūtō ovēs invādere. Magnō igitur impetū in ovēs dēlātus, cum ūnam oppidō pinguem rapuisset, concitē fugiēbat. Canēs id cōnspicātī, omissā domesticā pugnā lupum fugientem assecūtī, tantīs illum affēcēre vulneribus, ut vix posset ēvādere. Cum autem mox ab aliō lupō interrogārētur, cūr sōlus gregem esset adortus, ubī tam validī erant prōpugnātōrēs: domesticā, inquit, pugnā dēceptus sum. Fābula indicat, quod inimīcitiae externōrum discordēs propinquōrum animōs reconciliāre solent.
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):
Lupus ex alta spécula contemplátus canes géminos gregis ovium custódes inter se pugnántes, et sese mútuis mórsibus dilacerántes, spem concépit posse tuto oves invádere. Magno ígitur ímpetu in oves delátus, cum unam óppido pinguem rapuísset, cóncite fugiébat. Canes id conspicáti, omíssa doméstica pugna lupum fugiéntem assecúti, tantis illum affecére vulnéribus, ut vix posset evádere. Cum autem mox ab álio lupo interrogarétur, cur solus gregem esset adórtus, ubi tam válidi erant propugnatóres: doméstica, inquit, pugna decéptus sum. Fábula índicat, quod inimicítiae externórum discórdes propinquórum ánimos reconciliáre solent.
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:
Lupus
ex alta specula
contemplatus
canes geminos
gregis ovium custodes
inter se pugnantes,
et sese
mutuis morsibus dilacerantes,
spem concepit
posse tuto oves invadere.
Magno igitur impetu
in oves delatus,
cum unam oppido pinguem rapuisset,
concite fugiebat.
Canes id conspicati,
omissa domestica pugna
lupum fugientem assecuti,
tantis illum affecere vulneribus,
ut vix posset evadere.
Cum autem
mox ab alio lupo interrogaretur,
cur solus gregem esset adortus,
ubi tam validi erant propugnatores:
domestica, inquit, pugna
deceptus sum.
Fabula indicat,
quod inimicitiae externorum
discordes propinquorum animos
reconciliare solent.
IMAGE. Here is an illustration for the story (image source) showing a discouraged wolf: