Retro fridays and frog and toad books

I remember reading these books when I was 5 years old and I think I had 2 or 3 of them. I remember toad being the typical loner/jerk/grumpy character while frog was happy/positive/energetic/outgoing. I don't remember much about their stories but apparently they were best friends even though frog could do better but then again he probably sees the good in toad