Can they prevent access to animals? (5)
I believe the answer is:
'animals?' is the definition.
The definition and answer can be both animals as well as being plural nouns.
Perhaps they are linked in a way I don't understand?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for seals that I've seen before include "Fastens or closes securely" , "Marine mammals" , "they're impressive" , "They make an impression" , "Makes waterproof" .)