Your better getting over the "guilt" now than having to cause yourself more hassle in the future.
And just think whoever is left at home will have time to explore on their own without the other distracting them for half an hour.
I don't know why I'm being like this
It never worried me taking Tiggy or her brother to the vets separately. I think it's because they are so young and Riley, although very confident at home, is very scared at the vets - Tiggy was such a brave girl it never bothered her at all. I hate to think of Lucas realising his brother has gone and searching the house for him in vain
I don't think I will take Lukey at all, it might be a bit confusing for him being taken somewhere with Riley and coming back on his own.
I think Blackcat has hit the nail on the head though, Lukey would be alone at the vets while Riley is being seen to and while the sedative wears off he'd be alone aswell. I would rather he was alone at home than at the scary vets. Oh well, I might see if I can sweet talk the vets to doing the procedures while I wait then they won't need to be apart for a whole day, I'm not very hopeful though as I know they have set times for surgery and other procedures.