Oooh, that was definitely fiendish, Lebamski. Managed 3 connections, but didn't get any of the groups as I got sidetracked by different potential solutions.

Oof that was tough. 3/10 for me as well. The Toad group was very esoteric, although I liked the cleverness of the Ape group, which was the other one I didn't identify.

You stumped me too, Lebamski. I managed 4/10 and that was only just before the time ran out. I kicked myself when I saw the solution to the Ape group and I also failed to get the Toad group. I don't know if my earlier grid gave you a hint for the Wolf connection but I might not have realised that link within the time had it not been on my mind! Terrific challenge.

Too good for me. 1 line only