Η υιοθεσία και η αναδοχή προστατεύουν την ευζωία του ζώου.

Because Greek normally uses the definite article much more often than English.

Here, η υιοθεσία and η αναδοχή are two separate nouns, both feminine singular, so each one gets its own article:

• η υιοθεσία = adoption
• η αναδοχή = fostering / foster care

With και (and), Greek often repeats the article before each noun when they are being presented as two distinct ideas.

Because the subject is made of two things joined by και:

• η υιοθεσία
• η αναδοχή

Together they form a plural subject, so the verb must also be plural:

• προστατεύει = it protects
• προστατεύουν = they protect

So Greek is doing exactly what English does here: adoption and fostering protect...

προστατεύουν is the 3rd person plural, present tense, active voice of προστατεύω (to protect).

So it means:

• they protect
• or sometimes they are protecting, depending on context

In this sentence, it is best understood as a general statement: they protect.

Because ευζωία is the direct object of the verb προστατεύουν.

The sentence is answering what do they protect? They protect the well-being.

So ευζωία must be in the accusative case, and the feminine singular accusative article is την:

• η ευζωία = nominative, the well-being as subject
• την ευζωία = accusative, the well-being as object

του ζώου means of the animal or the animal’s.

It is in the genitive case, because Greek often uses the genitive to show possession or close relationship:

• η ευζωία του ζώου = the well-being of the animal
• literally: the well-being of the animal

Here:

• το ζώο = the animal (nominative / dictionary form)
• του ζώου = of the animal (genitive)

So the structure is very normal Greek: την ευζωία του ζώου = the animal’s welfare/well-being

Greek often uses the singular in a generic sense, just like English can.

So του ζώου here does not necessarily mean one specific animal only. It can mean the animal in a general sense, like animal welfare.

Greek often does this when talking about a category as a whole.

They are related, but not the same.

• υιοθεσία = adoption
• αναδοχή = fostering / foster care

In the context of animals:

• υιοθεσία means the animal becomes part of a permanent home
• αναδοχή usually means temporary care by a foster person/family

So the sentence contrasts or pairs two different ways of caring for animals.

Yes, especially in formal, legal, or welfare-related contexts.

ευζωία means well-being, good living conditions, or welfare.
With animals, it often corresponds to animal welfare.

It is a more formal word than something very everyday and conversational. In texts about animal protection, shelters, veterinary policy, or law, it is quite natural.

It is built from:

• ευ- = well / good
• a root related to life/living

So the basic idea is good living / well-being.

Here are the genders:

• η υιοθεσία — feminine
• η αναδοχή — feminine
• η ευζωία — feminine
• το ζώο — neuter

That is why you see:

• η with the first three nouns
• το / του with ζώο

Because Greek uses definite articles in places where English often would not.

In English, you might say:

• Adoption and fostering protect animal welfare

But in Greek, it is very natural to say:

• Η υιοθεσία και η αναδοχή προστατεύουν την ευζωία του ζώου.

Greek tends to use the article with abstract nouns, institutional concepts, and generic references more readily than English.

So even if English drops the, Greek often keeps it.

No, Greek word order is more flexible than English because case endings and articles show the grammatical roles.

This sentence has a very neutral, standard order:

• subject: Η υιοθεσία και η αναδοχή
• verb: προστατεύουν
• object: την ευζωία του ζώου

That is the most straightforward order for a learner.

Other orders are possible in Greek for emphasis, but this version is the clearest and most natural in ordinary informative writing.

A simple pronunciation guide is:

i yiothesía ke i anadochí prostatévoun tin evzoía tou zóou

A few notes:

• η sounds like ee
• υι in υιοθεσία is pronounced like yi
• χ in αναδοχή is like the German Bach or Scottish loch
• ευ is often pronounced ev before voiced sounds, so ευζωία sounds like evzoía
• ζ sounds like z
• ζώου is pronounced roughly ZO-ou

Yes, they are related in meaning through the idea of living / life, but they are different words and forms.

• ευζωία = well-being / good living
• ζώου = genitive of ζώο, animal

Even though they look similar, in this sentence you should learn them as separate vocabulary items:

• η ευζωία = welfare, well-being
• το ζώο = animal

The similarity is not accidental, but grammatically they are functioning as different words here.

Yes. Even if the meaning has already been given, that is a very natural English rendering.

A very literal translation is:

• The adoption and the fostering protect the well-being of the animal.

But more natural English would often be:

• Adoption and fostering protect animal welfare.

So the Greek is slightly more article-heavy and formal than the most natural English version.