Are you writing a paragraph? Or reading one? If you’re writing a paragraph without a topic sentence I’d suggest subtly writing a sentence that highlights the main idea or topic where you think itd best belong. If you’re reading a paragraph without a topic sentence it’s hard to find out what the main idea is but if you gather key details and facts you can infer yourself what you think the topic/main idea is.
I believe its <em>This is why they are able to take down large prey such as moose or deer by working together as a seamless team since the excerpt is talking about how they co-operate in their daily life as wolf </em>