V tomto případě zavolejte veterináře.

Because v here means in, and after v Czech uses the locative in this kind of expression.

The base form is:

• tento případ = this case

After v, both words change:

• v tomto případě = in this case

So:

• tento → tomto
• případ → případě

Both words have to match in case, number, and gender.

Usually no, not if you mean in this case.

• v tomto případě = in this case
• v tom případě = in that case / then

So tomto comes from tento = this, while tom comes from ten = that / the in many contexts.

A very common spoken alternative to v tomto případě is:

• v tomhle případě

That still means in this case, just in a more colloquial style.

Zavolejte is the imperative form of zavolat.

It means:

• call!
• do call
• please call

More exactly, it is the imperative for:

• you (plural), or
• you (singular polite/formal)

Compare:

• zavolej = call! (to one person, informal)
• zavolejte = call! (to several people, or to one person politely)

So this sentence sounds like an instruction or recommendation.

This is about aspect, which is very important in Czech.

• zavolat = perfective → to make one complete call
• volat = imperfective → to be calling, call repeatedly, keep calling

In this sentence, the idea is a single completed action: in that situation, make the call. So Czech uses the perfective imperative:

• zavolejte veterináře

If you said volejte, it could sound more like:

• keep calling
• be calling
• call repeatedly

So zavolejte is the natural choice here.

Because Czech often omits subject pronouns when they are already clear from the verb ending.

The ending -jte in zavolejte already tells you that the instruction is for:

• you plural, or
• you formal singular

So adding vy is usually unnecessary.

Czech often works like this:

• Přijďte. = Come.
• Počkejte. = Wait.
• Zavolejte veterináře. = Call the veterinarian / Call a veterinarian.

Because veterináře is the accusative singular form of veterinář.

• veterinář = nominative singular
• veterináře = accusative singular

Here it is the object of the verb, so Czech does not use the basic dictionary form.

This happens because veterinář is a masculine animate noun. For masculine animate nouns, the accusative singular usually looks like the genitive singular:

• nominative: veterinář
• genitive: veterináře
• accusative: veterináře

That is a very common Czech pattern.

Good question. Czech can express slightly different meanings here.

• zavolejte veterináře often means call for / get / summon the veterinarian
• zavolejte veterináři means call the veterinarian on the phone

So the accusative version is often about bringing that person in or requesting their help, while the dative version is more clearly about phoning them.

In English, call the vet can mean either one, but Czech can distinguish the two more clearly.

It can mean either, depending on context.

Czech has no articles like a and the, so the noun itself does not show that distinction.

So zavolejte veterináře could mean:

• call the veterinarian
• call a veterinarian
• get a vet

You understand which one is meant from the situation, not from an article.

Yes, Czech word order is fairly flexible, but different orders sound more or less natural depending on emphasis.

The given sentence:

• V tomto případě zavolejte veterináře.

is very natural if you want to start with the condition: in this case.

Other orders are possible, but they change the focus:

• Zavolejte veterináře v tomto případě.
  Possible, but less neutral.
• Veterináře v tomto případě zavolejte.
  Stronger emphasis on veterináře.

So Czech word order is not random; it helps show what is already known and what is being emphasized.

It sounds standard and a bit neutral-to-formal. It is very common in instructions, explanations, manuals, and careful speech.

In everyday spoken Czech, people might also say:

• v tomhle případě

That sounds more conversational.

So:

• v tomto případě = standard, neutral, slightly more formal
• v tomhle případě = common spoken Czech

The hardest part is the letter ř, which is a special Czech sound.

A few helpful points:

• veterináře has stress on the first syllable
• the á is a long vowel
• ř is not exactly an English sound

A rough beginner-friendly guide:

• veterináře ≈ VE-te-ri-naa-rzhe

But that is only approximate. The real ř is something like an r and zh sound produced together.

If you are a beginner, it is perfectly normal not to master ř right away. A clear approximation is much better than getting stuck.