When I was giving Wick syringes regularly (twice a day for 3mo; URI treatments), the best way was to make a ring with my fingers and put it around his neck. There’s no pressure against his neck, but the ring size makes it very hard for him to move forward (shoulder blades can’t get through finger ring) or backwards (jaw can’t get through finger ring). I have him on the floor, me sitting behind him with my knees touching his bottom so he cannot back up. That’s how I did it with Wick. Admittedly, Wick is pretty sheepish with syringes when I present him with one and he doesn’t want it (ie. I’m offering him water because I haven’t seen him drink it in a while). He sinks his head down and looks down, so sad to see, but it means he understands there are some circumstances where I do need to give him syringes when he doesn’t feel he needs it. Like medications. Of course, everything is always followed by pets and it’s accompanying teeth chatter.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.