How long would you guys wait to call the vet if your dog's eating slowed down? This is probably premature and will work itself out, but just wanted to check.
Charlie hasn't been wanting to eat much this past week or two and has only been eating about 2/3 of his food (two of his three meals per day). So we thought maybe he was ready to switch to twice a day feedings but that doesn't seem to be helping.
This morning he got half of his normal breakfast because we had agility and I wanted him hungry so he'd be more food motivated. He had a little bit of treats at agility, but not much (Natural balance roll). So this afternoon I tried to give him the other half and he didn't eat it so after an hour I picked it up. Tonight I gave him a little more than his normal dinner portion. He sniffed it and walked away. About 20 minutes later he went over, took a bite or two, then left it, so I tossed it out. So, today he has only had about 1/4 or less of what he usually eats.
He does seem to eat if I put yogurt or cheese on it (which is rarely), but I don't want to create a picky eater where that's the ONLY way he'll eat it, so I haven't given him anything like that since I noticed the sluggish eating.
Do dogs sometimes slow down eating in the summer? It's been the same hotness here for the past two months though, and it's not like he's outside all the time.
He seems fine otherwise, acting normal, peeing/pooping, etc. So I'll just watch him for now, but again was just wondering how long you guys would wait before calling the vet if it was your dog.
Thanks!

(sorry it got so long - I ramble)