So im trying to activate my spike trap animation when my player walks over it, but it doesnt seem to activate , the player is correctly tagged "Player" and the script appears to be correct.

Well it could be a few things. First, I would ensure that your OnTriggerEnter is being called properly. Add something like this 

Debug.Log("Player entered trigger zone") 

within the OnTriggerEnter "if statement". This will appear in the console if it's properly detecting the player entering. Note for this to work properly, it needs three things:

• Collider 
• Tag of "Player" on Collider object (or any tag you specify)
• A Rigidbody (kinematic or non-kinematic)

I may have figured it out , didnt know that when you tag something it doesnt tag the children , may have caused the animation not to play .