As a non-native speaker,when when I read the books about grammar,I learnobserve that usually use everything in positive sentence and anything in negative or interrogative sentence.But..
We usually use everything for a positive sentence and anything for a negative or interrogative sentence.
But I often see sentences in some magazines and articles,like We'll do almost anything for our beloved animals.What's like "We'll do almost anything for our beloved animals."
What's the difference between them and is it changing the meaning in sentence?