..ต่างจากลูกจรเข้ ที่จะต้องต่อสู้ชีวิตด้วยตัวเองตั้งแต่ออกจากไข่ (this is not quitecorrect)
รีบหาที่ซ่อน ไม่ให้เป็นเหยื่อผู้อื่น (this is correct)...

===This is not quite correct. There are a lot of evidence showing mother crocs really look after their broods until they are old enough (3-5 months, 2-3 foot long). Many TV documentaries shows how tender and loving mother crocs are for their babies. Many frogs and fish do look after their babies too.

Examples of free born and independent from day 1 are turtles, insects (butterflies, cockroaches, crickets, cicadas,... ) and corals.