#dog-pregnancy-calculator {
max-width: 600px;
margin: 20px auto;
padding: 15px;
background: #fff;
border-radius: 5px;
box-shadow: 0 1px 3px rgba(0,0,0,0.1);
font-family: -apple-system, BlinkMacSystemFont, ‘Arial’, sans-serif;
color: #333;
box-sizing: border-box;
}
h2 {
text-align: center;
margin: 0 0 15px;
font-size: 1.4rem;
line-height: 1.2;
color: #333;
}
p {
text-align: center;
color: #666;
font-size: 14px;
margin-bottom: 15px;
}
.form-group {
margin-bottom: 15px;
position: relative;
}
label {
display: block;
margin-bottom: 5px;
font-size: 0.9rem;
font-weight: 600;
}
input[type=”date”], input[type=”number”] {
width: 100%;
padding: 8px;
border: 1px solid #ddd;
border-radius: 3px;
font-size: 0.9rem;
box-sizing: border-box;
}
input:focus {
border-color: #0073aa;
outline: none;
}
.tooltip {
position: relative;
display: inline-block;
margin-left: 5px;
}
.tooltip .tooltip-text {
visibility: hidden;
width: 180px;
background: #333;
color: #fff;
text-align: center;
border-radius: 3px;
padding: 5px;
position: absolute;
z-index: 10;
bottom: 125%;
left: 50%;
transform: translateX(-50%);
opacity: 0;
transition: opacity 0.3s;
font-size: 0.75rem;
}
.tooltip:hover .tooltip-text {
visibility: visible;
opacity: 1;
}
.button-group {
display: flex;
gap: 10px;
justify-content: center;
margin-top: 15px;
}
button {
padding: 8px 16px;
border: none;
border-radius: 3px;
cursor: pointer;
font-size: 0.9rem;
background: #0073aa;
color: #fff;
}
button:hover {
background: #005177;
}
#reset-btn {
background: #6c757d;
}
#reset-btn:hover {
background: #5a6268;
}
#copy-btn {
background: #28a745;
}
#copy-btn:hover {
background: #218838;
}
#result {
margin-top: 15px;
padding: 10px;
border-radius: 3px;
font-size: 0.9rem;
line-height: 1.4;
min-height: 20px;
}
#result.success {
background: #e6f4ea;
border: 1px solid #28a745;
}
#result.error {
background: #f8d7da;
border: 1px solid #dc3545;
}
.progress-bar {
width: 100%;
background: #f0f0f0;
border-radius: 3px;
height: 20px;
margin-top: 10px;
overflow: hidden;
}
.progress-bar-fill {
height: 100%;
background: #28a745;
transition: width 0.3s ease;
}
.timeline {
margin-top: 10px;
font-size: 0.85rem;
}
.timeline div {
margin: 5px 0;
}
noscript {
display: block;
color: #dc3545;
text-align: center;
margin-top: 10px;
font-size: 0.9rem;
}
@media (max-width: 600px) {
#dog-pregnancy-calculator {
margin: 10px;
padding: 10px;
}
h2 {
font-size: 1.2rem;
}
.button-group {
flex-direction: column;
}
button {
width: 100%;
}
}
`;
resultDiv.innerHTML = `
Estimated Whelping Date: ${formatDate(dueDate)}
Possible Whelping Range: ${formatDate(minDueDate)} to ${formatDate(maxDueDate)}
Current Stage: ${daysElapsed >= 0 ? trimester : ‘Pregnancy not yet started.’}
Progress:
Pregnancy Timeline: ${timeline}
Care Tips:
Enhanced Dog Pregnancy Calculator
Estimate your dog’s whelping date and track pregnancy stages.
Enter the mating date, then click “Calculate”.
JavaScript is disabled. Please enable it to use the calculator.
(function() {
if (!document.getElementById(‘dog-pregnancy-calculator’)) return;
const form = document.getElementById(‘calc-form’);
const matingDateInput = document.getElementById(‘mating-date’);
const gestationPeriodInput = document.getElementById(‘gestation-period’);
const resultDiv = document.getElementById(‘result’);
function formatDate(date) {
return date.toLocaleDateString(‘en-US’, {
weekday: ‘long’,
year: ‘numeric’,
month: ‘long’,
day: ‘numeric’
});
}
function calculate() {
resultDiv.className = ”;
resultDiv.innerHTML = ”;
try {
const matingDateStr = matingDateInput.value;
const gestationDays = parseInt(gestationPeriodInput.value);
if (!matingDateStr) {
throw new Error(‘Mating date is required.’);
}
if (isNaN(gestationDays) || gestationDays 68) {
throw new Error(‘Gestation period must be between 58 and 68 days.’);
}
const matingDate = new Date(matingDateStr);
if (isNaN(matingDate.getTime())) {
throw new Error(‘Invalid mating date.’);
}
const dueDate = new Date(matingDate);
dueDate.setDate(matingDate.getDate() + gestationDays);
const minDueDate = new Date(matingDate);
minDueDate.setDate(matingDate.getDate() + 58);
const maxDueDate = new Date(matingDate);
maxDueDate.setDate(matingDate.getDate() + 68);
const today = new Date();
const daysElapsed = Math.floor((today – matingDate) / (1000 * 60 * 60 * 24));
const progressPercent = Math.min((daysElapsed / gestationDays) * 100, 100);
const trimester = daysElapsed <= 21 ? 'First (Days 1–21): Embryo implantation, minimal visible changes.' :
daysElapsed <= 42 ? 'Second (Days 22–42): Abdomen enlarges, appetite increases.' :
'Third (Days 43–63): Puppies palpable, nesting behavior begins.';
const timeline = `
First Trimester (Days 1–21): Pregnancy confirmed via ultrasound (day 20–25).
Second Trimester (Days 22–42): Belly grows, nipples darken, weight gain noticeable.
Third Trimester (Days 43–63): X-ray possible (day 45+) to count puppies, prepare whelping box.
Possible Whelping Range: ${formatDate(minDueDate)} to ${formatDate(maxDueDate)}
Current Stage: ${daysElapsed >= 0 ? trimester : ‘Pregnancy not yet started.’}
Progress:
Pregnancy Timeline: ${timeline}
Care Tips:
- Feed high-quality puppy food from day 35, increasing portions gradually.
- Prepare a whelping box by day 50 with clean bedding in a quiet area.
- Monitor for signs of distress; consult a vet for checkups (day 25–30).
- Limit strenuous exercise in the third trimester to avoid stress.