Pes štěká, protože chce krmivo.

Pes is the nominative singular form, and that is the form used for the subject of the sentence.

• Pes štěká. = The dog is barking / A dog barks.
• Psa is a different case form, used in other grammatical roles, for example as a direct object.

So here pes is correct because the dog is the one doing the barking.

Czech does not use articles like English the and a/an.

So pes can mean:

• the dog
• a dog

Which one sounds best depends on context. Czech usually leaves that to the situation rather than marking it with an article.

Štěká means barks / is barking.

Its dictionary form is štěkat, which means to bark.

In this sentence:

• štěkat = infinitive, to bark
• štěká = he/she/it barks or is barking

Because pes is singular, the verb is also singular.

A rough English-friendly guide is:

• š sounds like sh
• ť is a softened t
• ě after ť helps signal that soft pronunciation
• á is a long a

So štěká sounds roughly like shtye-kaa, though the real Czech pronunciation is tighter and cleaner than that English approximation.

The stress in Czech is normally on the first syllable:

• ŠTĚ-ká

Because protože introduces a subordinate clause: because he wants food.

Czech normally separates this kind of clause with a comma:

• Pes štěká, protože chce krmivo.

This is similar to English, where a comma may also appear before because, though Czech punctuation is more rule-based here.

Protože means because.

Yes, it can come at the beginning:

• Protože chce krmivo, pes štěká.

That still means the same thing, just with a different emphasis. Czech word order is more flexible than English, although the version with Pes štěká, protože... is very natural.

Chce comes from the verb chtít, which means to want.

It is the 3rd person singular form:

• já chci = I want
• ty chceš = you want
• on/ona/ono chce = he/she/it wants

Since pes is a singular noun, Czech uses chce = it wants.

Because Czech often drops subject pronouns when the verb ending already shows the person and number.

So:

• chce already means he/she/it wants

That makes an explicit pronoun unnecessary.

You could say protože ono chce krmivo, but that would usually sound unnatural here unless you were adding special emphasis. In normal Czech, the pronoun is omitted.

Here krmivo is the direct object of chce.

The verb chtít usually takes the accusative case. So in meaning, krmivo is accusative here.

However, krmivo is a neuter noun, and for many neuter nouns the nominative and accusative singular forms look the same. So:

• nominative: krmivo
• accusative: krmivo

That is why you do not see a visible ending change.

Krmivo means feed, animal food, or fodder. It is a word especially suited to animals.

Compare:

• krmivo = feed, animal food
• jídlo = food, meal, something to eat in general
• žrádlo = animal food / grub; can sound more colloquial or rough

So krmivo is a good choice if you mean the dog wants its feed or pet food.

Yes. Czech word order is more flexible than English because case endings and verb forms carry a lot of grammatical information.

Possible alternatives include:

• Pes štěká, protože chce krmivo.
• Protože chce krmivo, pes štěká.

Both are grammatical. The difference is mainly in emphasis and information flow, not core meaning.

Still, not every rearrangement sounds equally natural in every context, so the original sentence is a very safe and natural version.

It can mean either, depending on context.

Czech present tense often covers both:

• a general meaning: The dog barks
• a current action: The dog is barking

So Pes štěká could describe:

• what the dog is doing right now, or
• a general behavior

The surrounding context tells you which meaning is intended.

Yes. Even though Czech does not repeat pes or add it, the second clause is naturally understood to refer to the same subject unless context suggests otherwise.

So the sentence is interpreted as:

• The dog is barking because it wants food.

That connection is very normal and natural in Czech.