Agree. This would "feel" better as an English sentence with the pig likes watermelon or the pig likes the watermelon. Does Navajo have both definite and indefinite articles, only one, or neither?
Shouldn't this be "The pig likes watermelon" or "A pig likes watermelon" rather than "pig likes watermelon" there is no article available in the word bank. also having audio for the words would help people get used to the tonal nature and vowel length and exploded consonants not found in English. Missing hearing the words.
The proper English sentence would be "The pig likes watermelon." or "A pig likes watermelon." you cannot use this sentence without the indefinite or definite article in English.