El veterinario recomienda desparasitar cada año.

In Spanish, professions often use the definite article when you are talking about a specific person already understood in context.

• El veterinario = the veterinarian / the vet
• If you just said veterinario by itself here, the sentence would sound incomplete.

So this sentence is talking about a specific vet, even if the person is not named.

Not necessarily in real life, but grammatically el veterinario is masculine singular.

• el veterinario = the male vet, or sometimes a generic/default masculine form
• la veterinaria = the female vet

So if the vet is female, you would normally say:

• La veterinaria recomienda desparasitar cada año.

Recomienda is the third-person singular present tense of recomendar.

That matches the subject el veterinario:

• yo recomiendo = I recommend
• tú recomiendas = you recommend
• él/ella/usted recomienda = he/she/you recommend

Since el veterinario is he/she/it in grammatical agreement, Spanish uses recomienda.

Because recomendar is the infinitive form, like to recommend.
In a normal sentence with a subject, Spanish usually uses a conjugated form.

Here:

• infinitive: recomendar
• conjugated for el veterinario: recomienda

Also, this verb has a stem change:

• recomendar
• recomiendo
• recomiendas
• recomienda

The e changes to ie in many present-tense forms.

Because after recomienda, Spanish often uses an infinitive to say what is being recommended.

Structure:

• [someone] recomienda [infinitive]

So:

• El veterinario recomienda desparasitar cada año. = The vet recommends deworming every year.

This works like English recommends doing something.

Good question. Desparasitar usually takes a direct object, because you deworm someone or something:

• desparasitar al perro = to deworm the dog
• desparasitar a tu mascota = to deworm your pet

In your sentence, the object is omitted because it is understood from context. For example, maybe everyone is already talking about a pet.

So the full idea could be something like:

• El veterinario recomienda desparasitar a tu mascota cada año.

Spanish often leaves out information that is obvious from context.

Because no direct object is actually stated.

If the sentence included a specific person or animal, you would often see personal a:

• desparasitar al perro
• desparasitar a tu gato

Here, since the object is omitted, there is nothing for a to introduce:

• recomienda desparasitar cada año

So the sentence stays shorter and more general.

Yes, that is possible, but it changes the structure.

Two common patterns are:

• recomienda desparasitar cada año
• recomienda que desparasites cada año

Difference:

1. recomienda + infinitive
   More general, more impersonal, very common in advice.

2. recomienda que + subjunctive
   More explicit about who should do the action.

So:

• El veterinario recomienda desparasitar cada año.
  The vet recommends deworming every year.

• El veterinario recomienda que desparasites a tu mascota cada año.
  The vet recommends that you deworm your pet every year.

Cada means each / every, and año means year.

So:

• cada año = every year

This expression is very common in Spanish.
Notice that Spanish does not use an article here:

• cada año
• not cada un año

Other examples:

• cada día = every day
• cada semana = every week
• cada mes = every month

Yes. Both are natural.

• cada año = every year
• todos los años = every year / all the years

In most everyday contexts, they mean basically the same thing.

So these are both fine:

• El veterinario recomienda desparasitar cada año.
• El veterinario recomienda desparasitar todos los años.

Cada año is a little more compact; todos los años can sound slightly more emphatic, but often there is no big difference.

Not completely. Spanish word order is flexible, although the original sentence is the most neutral.

Neutral order:

• El veterinario recomienda desparasitar cada año.

You could also say:

• Cada año, el veterinario recomienda desparasitar.

That puts more focus on the time expression cada año.

What you usually would not want to do is move things around randomly without a reason, because the sentence may sound less natural or change emphasis.

A rough pronunciation guide is:

• dehs-pah-rah-see-TAR in much of Latin America

Important points:

• The stress is on the last syllable: -tar
• In most of Latin America, z sounds like s
• The r is a tapped Spanish r, not a heavy English r

So desparasitar sounds approximately like:

• dehs-pah-rah-see-TAR

Yes, especially in veterinary and medical contexts. It is the normal verb for to deworm or to remove parasites from a person or animal.

Related words:

• desparasitar = to deworm
• desparasitación = deworming, parasite treatment
• antiparasitario = antiparasitic

In everyday speech, people often say things like:

• Hay que desparasitar al perro.
• ¿Ya desparasitaste al gato?

So this is a very useful word if you talk about pets, farm animals, or health.

Yes. Even though a direct object is missing, the sentence can sound like a general veterinary recommendation.

It can mean something like:

• This is what the vet recommends as a general rule.
• The specific animal is understood from context.

Spanish often allows this kind of concise statement, especially in advice, instructions, or professional recommendations.