chased deer

took max to the airfield today, off lead.

there is a part that is a big piece of grass then small woods then grass the other side of that then woods again. crows on field, he looked like going to chase and i said leave and he did.  bunnys abound near the woods and he went off and had his head down a rabbit hole and it took me walking off to get him away.

next thing i know, he crashes in and i hear a bark and a flash of brown. i think maybe its another dog but out come 3 deer about 50ft away from me with max following behind!

they were heading for the next bit of woods and i hoped he would give up  there but he was not going to stop.

i stood there thinking that deer run across roads, he will lose his direction etc, when they come back out back towards the first woods. he nowhere to be seen. they go in woods and then he appears. because hes lost sight off them, i whistle and he comes. he was a little black dot.

im upset over this because hes had muntjac crossing in front of him before and bunnies near and he has looked but not chased (except bunnies once and i called him off). he found it thrilling and i dont know what to. am i over reacting?

i knew i was heading for a backward step as he has been improving lately but not this. it was as if he had the devil in him today. it was the furthest hes gone from me and been out of sight and it was scarey.