"The dog is hungry."

Translation: कुत्ता भूखा है।

[Olivier216505]

कुत्ता भूख लगी है doesn't work?

[emrys29]

Not quite.
कुत्ते को भूख लगी है। would work. Keep in mind that this is still a singular sentence referring to one dog.

[Olivier216505]

Yes, I forgot को, and then obviously the oblique with it.

[AlokTrived5]

No it doesn't, if you use it this way then the bhookh(hunger) will be changed into possessive case
As
"Kutte ko bhukh lagi hai"
In english
Dog has hunger.